A friend of mine works as the Baptist Campus Minister at my university. He occasionally takes part in interfaith dialogues, and he tells me about his interactions from time to time. One such instance struck me as being apologetically significant and worth blogging about (with his permission). The conversation started out with what the Qur'an says about Jesus, and it ended up moving to what the Bible says about Muhammad. You might be wondering what the Bible could possibly say about Muhammad, since he was around long afterward, but you can't rule something like that out if you're open to predictive prophecy. Why couldn't a divine revelation have something to say about someone who hasn't come around yet? Christians believe the Hebrews scriptures point to Jesus, after all. It doesn't do to insist on that when you like it and then rule it out when you don't like it.
But the particular example many Muslims give of Jesus in the Bible makes no sense. They say that Deuteronomy 18's future prophet like Moses is Muhammad. Many Christians take this prophet to be Jesus. The first-century Christians certainly did, including the book of Acts. But there's one reason even within Deuteronomy that makes it very unlikely that this passage could be referring to Muhammad. Deuteronomy 18 speaks of this prophet as "one of your brothers". That means the prophet like Moses will be Jewish.
Muslim apologists take "one of your brothers" to mean that the prophet will come out of an ethnic group that is a brother group to the people of Israel. Since they take Arabs to be descended from Ishmael, they can happily say that Muhammad is thus one of the brothers of Israel. There's only one problem with this. My friend noticed this immediately, because the day before he'd just been reading the previous chapter, Deuteronomy 17. That chapter uses the same Hebrew expression for "one of your brothers" in its requirements for kingship. It isn't saying that the king ought to come not from Israel itself but from one of its brother peoples. The requirement simply restricts the kingship to Israelites. So why should we think the exact same expression one chapter later would mean something very different? The prophet would come out of Israel, not some related people group.