From the Koran: [4.157] And their saying: Surely we have killed the Messiah, Jesus son of Mary, the apostle of Allah; and they did not kill him nor did they crucify him, but it appeared to them so (like Jesus) and most surely those who differ therein are only in a doubt about it; they have no knowledge respecting it, but only follow a conjecture, and they killed him not for sure.
From the Roman Catholic Cathechism: 841. "The Church's relationship with the Muslims. 'The plan of salvation also includes those who acknowledge the Creator, in the first place amongst whom are the Muslims; these profess to hold the faith of Abraham, and together with us they adore the one, merciful God, mankind's judge on the last day.'[LG 16; cf. NA 3.]"
The Koran specifically teaches that Jesus DID NOT DIE ON THE CROSS. A complete repudiation of the "Holiest of Holies" of the Christian belief -- and Roman Catholicism ACCEPTS that!