I'm guessing you understandably have little knowledge about the prophecy of Imam Mehdi. In Islam the dajjal (anti-christ) will come and form his tyranical rule over the world, then Imam Mehdi will proclaim his return and defeat the anti-christ and his army. After this, Issa (Jesus) will return, join with Imam Mehdi and kill the anti-christ. So both Muslims and Christians are waiting for the return of Jesus to kill the anti-christ. It's only the Jews who are waiting for a non-Jesus/Issa Mesiah.
Maybe why the Quran states:
5:82: "Strongest among men in enmity to the believers wilt thou find the Jews and Pagans; and nearest among them in love to the believers wilt thou find those who say: "We are Christians:" because amongst these are men devoted to learning and men who have renounced the world and they are not arrogant."