ACCORDING TO KORAN: JESUS WAS CRUCIFIED:
The question of Jesus crucifixion comes as well.
We need to read the verses in Koran carefully and see their meaning.
The verse 4: 157-158
As well as their statement when they said, we surely killed the Healer, Son of Mary, messenger of God, however, they did not kill him and they did not crucify him but it was perceived by them as such. Furthermore, those who disputed in this matter are doubtful about it. They have no knowledge thereof except following conjecture. Moreover, for sure, they did not kill him.
So we see that the Koran says that: Jesus was not crucified but it appeared to them as if he was. Many interpretations to this verse, depending on what the commentator want to convey. Well, here it is for you: He was not killed because how can they kill God, but they thought they triumphed over him, thinking they ended his mission being hanged on the Cross. But how can you kill God! It was an illusion as far as they were concerned, that is the meaning. There is nothing in the Koran that somebody else was crucified in his place, just attempts of interpretation by different commentators.
To sum up: Jesus was crucified, the Koran says it appeared to them that they crucified him, but they can’t, because he is God Incarnate.