Miracle is the most advanced form of BRAINWASHING.

For sure, millions of Muslims and Non-Muslims became extremely affected by this false propaganda of Quranic miracle.

And at the top of the list is the so-called Quranic miracle of body of Pharaoh.

According to the Quran, Allah promised to save the dead body of Pharaoh as a sign for later coming generations. 

(Quran 10:90-93) And We took the Children of Israel across the sea, and Pharaoh and his soldiers pursued them in tyranny and enmity until, when drowning overtook him, he said, "I believe that there is no deity except that in whom the Children of Israel believe, and I am of the Muslims ... So today We will save you in body that you may be to those who succeed you a sign

Muslim lies about Pharaoh's dead body
Muslim lies about Pharaoh's dead body

Therefore, when the dead body of Ramesses II was found, then Muslims started claiming it the same Pharaoh of Moses era, and claimed it to be a miracle of Quran which promised that his dead body would be saved as sign for later generations. 

Maurice Bucaille (a biologist) was the first person who claimed that the Mummy of Ramesses II, is the same one about whom Allah told in the Quran that He is going to preserve his dead body. 

But what was the proof that Maurice Bucaille provided for this claim? 

Maurice Bucaille claimed that the Mummy was full of "SALT", which proves that this Mummy was the same Pharaoh who drowned in the sea, and thus this "salt" has come from that sea. 

But contrary to Maurice Bucaille claim:

(1) The Mummy of Ramesses II didn't come from the Red Sea, but it was taken out from the "Valley of Kings" (where many other Mummys of Pharaohs were buried). 

(2) And the "salt" upon the body of Ramesses II, was not from the red sea, but it was a type of salt, which is known as "Natron" and has been extensively used for the purpose of preservation. 

Not only Ramesses II, but "all" the Mummys were preserved by using this, Natron Salt.

Most Perfect Method of Mummification 
https://en.wikipedia.org/wiki/Mummy
The body was further dehydrated by placing it in natron, a naturally occurring salt, for seventy days. Herodotus (the Researcher Scientist) insists that the body did not stay in the natron longer than seventy days. Any shorter time and the body is not completely dehydrated; any longer, and the body is too stiff to move into position for wrapping.

And the body of Ramesses II was not found in the red sea, but in the "Valley of Kings". 

Ramesses II
https://en.wikipedia.org/wiki/Ramesses_II
Ramesses II was originally buried in the tomb KV7 in the Valley of the Kings but, because of looting, priests later transferred the body to a holding area, re-wrapped it, and placed it inside the tomb of queen Ahmose Inhapy.. Seventy-two hours later it was again moved, to the tomb of the high priest Pinudjem II. All of this is recorded in hieroglyphics on the linen covering the body.[58] His mummy is today in Cairo's Egyptian Museum.​

There exists No Proof that Ramesses II was the same Pharaoh of the story of Moses

Moreover, there has not been a single proof that Ramesses II was the same Pharaoh who existed during the era of Moses.

Many WRITINGs were found from the place of burial of Ramesses II, and they have a lot of details about Ramesses, about buildings, about wars, about progress in Egypt etc. (link), but not a single hint is present there about Moses.

And the name of the wife of Ramesses II was not "ASIYAH" (the wife of Pharoah of the Moses era). But the wife of Ramesses II was a famous queen whose name was "Nefertari". He had other wives too, who were IsetnofretMaathorneferureMeritamenBintanathNebettawyHenutmire, but none of them had the name of Asiyah. 

Therefore, there exists not a single proof that Ramesses II is the same Pharaoh of Moses era and Allah fulfilled any of his promise regarding him, but still propaganda is so strong that millions of people have been deceived in believing this miracle of Quran and thus they accepted Islam due to this lie.

It's also impossible for the Quranic pharaoh to be Ramses II, while he died in his 90s and was suffering from severe arthritis by that time. It's inconceivable someone as old and frail as him was chasing the Israelites into the red sea. Makes no sense at all.

Also, Ramses II used to pray to God for help in desperate times. But the Quranic pharaoh hated the idea of taking help from another diety.

The only reason Muslims are so desperate to force Ramses II into the story is because he is the only historic pharaoh that fits the ruling timeframe in the Quran (60+ years). So, they have no choice but to fit him in any way possible. 

The Quran could have just named the pharaoh, a missed miracle opportunity here.

The "height" of Ramesses II is only 5 feet and 7 inches

Islam claim that people before Prophet Muhammad were very tall, and Adam was 60 cubits tall, and then it started gradually decreasing. But modern science is refuting this Islamic claim. The height of Ramesses II is only 5' and 7''.

https://en.wikipedia.org/wiki/Ramesses_II
The pharaoh's mummy reveals an aquiline nose and strong jaw, and stands at about 1.7 metres (5 ft 7 in).​

Not only Ramesses II, but scientists have found thousands of human fossils who are older than prophet Muhammad, but none of them is 30 m tall, but they all are as heigh as the people of today.

Please see the article at Islamqa.info:

https://islamqa.info/en/answers/20612/

This hadeeth was narrated by Abu Hurayrah (may Allaah be pleased with him) from the Prophet (peace and blessings of Allaah be upon him) who said:

“Allaah created Adam and he was sixty cubits tall. Then He said, ‘Go and greet those angels and listen to how they greet you, for that will be your greeting and the greeting of your progeny.’ He said, ‘Al-salaamu ‘alaykum (Peace be upon you).’ They said, ‘Al-salaamu ‘alaykum wa rahmat-Allaah (Peace be upon you and the mercy of Allaah).’ So they added the words ‘wa rahmat Allaah.’ And everyone who enters Paradise will be in the form of Adam. People kept on growing smaller until now.”

Narrated by al-Bukhaari, 3336; Muslim, 7092

According to a version narrated by Muslim: “Everyone who enters Paradise will be in the form of Adam who was sixty cubits tall. People kept growing smaller until now.”

With regard to the words of the Prophet (peace and blessings of Allaah be upon him), “People kept growing smaller until now,” al-Haafiz ibn Hajar said in Fath al-Baari (6/367): “This means that in every generation people grew shorter than the previous generation, and continued to grow shorter until the time of this ummah, then they stayed like that.”