Nebuchadnezzar’s dream in Daniel is a good way to reach Muslims
Sir, the Muslims believe that Allah is the God of Abraham and the prophets. Although they err greatly by attempting to come to God without coming through Christ (John 14:6), nonetheless, Islam recognizes the God of the Old Testament. I have found Nebuchadnezzar's dream Book of Daniel to be of great assistance in exposing the fallacy of the Muslims; the fourth kingdom, i.e., the Roman kingdom was the event in which the Messiah was to appear. The Muslim kingdom did not arrive until three more kingdoms later.
I'm glad you have found a way to reach some Muslims with the Gospel and I hope you have further success.