The Bible Answer Man, some Muslims believe that Judas was substituted for Christ and was crucified. They claim that Allah tricked the Roman soldiers and the Jewish officials into crucifying the wrong person.
This is manifestly wrong. The whole plan was for Christ to be the Christian's substitute on the cross. Jesus himself said in Luke 18:31 (KJV), "Then he took unto him the twelve, and said unto them, 'Behold, we go up to Jerusalem, and all things that are written by the prophets concerning the Son of man shall be accomplished'.'"
Jesus also described what would happen to him in Mark 10:33 (KJV). "Saying, 'Behold, we go up to Jerusalem; and the Son of man shall be delivered unto the chief priests, and unto the scribes; and they shall condemn him to death, and shall deliver him to the Gentiles':"
One of the clearest prophesies showing that it was Christ who would suffer is Isaiah 53:3 and 4 (KJV). "He is despised and rejected of men; a man of sorrows, and acquainted with grief: and we hid as it were our faces from him; he was despised, and we esteemed him not.
Surely he hath borne our griefs, and carried our sorrows: yet we did esteem him stricken, smitten of God, and afflicted."
Nobody treated Judas like that. In fact, it was he who betrayed Christ for thirty pieces of silver. Matthew 27:5 (KJV) clearly states, "And he (Judas) cast down the pieces of silver in the temple, and departed, and went and hanged himself." So how could he be Christ's substitute if he hung himself?
No, it was Christ who, like the Passover lamb, shed his blood for us who believe in him. Romans 5:11 (KJV) says, "And not only so, but we also joy in God through our Lord Jesus Christ, by whom we have now received the atonement." No mere mortal could have accomplished that.
Christ's substitutionary atonement is one of many doctrines I'll feature in my next book called You Think You're Going to Heaven? As Paul pointed out in 1 Corinthians 15:19 (KJV), "If in this life only we have hope in Christ, we are of all men most miserable." If Jesus didn't pay the price for our sin, we would be facing eternity in hell and been found to be liars.