The Quran's answer to the Resurrection -

I was discussing the resurrection with an experienced and knowledgeable Muslim Dawa-ist.
I made short work of his first objection to the Christian claim of the resurrection, so on his second try he took me on a tour of 300 years of history that started with Paul and went all the way to Constantine, mentioning Paul's disagreements with Peter and James and other (gnostic) "gospels" along the way. 

I stopped him after about ten minutes, pleading information overload.

There is a fundamental problem with his argument without even going into the details.

The Quran devotes around 40 Arabic words to the entire topic of the Crucifixion (and presumably also the resurrection, which is not mentioned in the Quran).  Here they are:

That they said, we killed the Christ Isa, the son of Mariam, the Apostle of Allah, but they killed him not, nor crucified him, but so it was made to appear to them, and those who differ therein are full of doubts, with no knowledge, but only conjecture to follow, for a surety they killed him not."
--Quran 4:157

My point is: If the resurrection is so surely only conjecture and the non-crucifixion of Jesus is surety, then why does it take a ten minute (at least) tour of 300 years from Paul to Constantine to begin to demonstrate this Muslim's point of view?  Even if he did have a point it would not be "surety". 
The argument that causes me to reject Christianity does not lead me to embrace Islam, even if this historic argument were convincing.

There are at least eight authors of the New Testament.  They all have different writing styles.  Mohammed, 600 years later, highhandedly make their testimony void with just 40 words?

Paul is notes that Christianity depends entirely on the resurrection:

 And if Christ has not been raised, then our proclamation is without foundation, and so is your faith.
In addition, we are found to be false witnesses about God, because we have testified about God that He raised up Christ—whom He did not raise up if in fact the dead are not raised.

(1 Cor 15:14,15)