Muslim intellectuals in their literature make claims about Paul that are false from a purely scholarly point of view.
If one is a non-Christian one can easily see the intellectual arguments and agree that Muslim intellectuals are wrong there and that in fact it all makes the Koran and Islam false.
Here are articles by Keith Thompson
He knows Islam and Christianity very well.
Here are Keith Thompson youtube videos
Here is an intellectual case against the Muslim position on Paul by Derek Adams,Atheist and ex-Christian
This is his blog:
And here is his article:
“Historicity of Jesus Confirms Paul Resulting in Problems for Islam”
Here are the videos