The false religion of Islam was predicted in Galatians. The Koran directly contradicts the core tenets of Christianity - the divinity of Jesus, his death, and thus his resurrection.

An-Nisa 4-157 And [for] their saying, "Indeed, we have killed the Messiah, Jesus the son of Mary, the messenger of Allāh." And they did not kill him, nor did they crucify him; but [another] was made to resemble him to them. And indeed, those who differ over it are in doubt about it. They have no knowledge of it except the following of assumption. And they did not kill him, for certain.

The New Testament predicts false claims against the Gospel and the source of those claims. Mohammed claimed the Koran was recited to him by the angel Gabriel (Jibril). This countered in Galatians:

Galatians 1:6-12 New King James Version (NKJV) But even if we, or an angel from heaven, preach any other gospel to you than what we have preached to you, let him be accursed. As we have said before, so now I say again, if anyone preaches any other gospel to you than what you have received, let him be accursed.