Didn't Jesus say something about, ' if they are not against me , ?
I'm meditating on this very thought. I've said here before that when I compare my church's 16 Fundamental Truths with the LDS Article's of Faith, there is not one doctrine that we can say we agree on. Nevertheless, we agree on the divinity of Christ, and that his sacrifice atones for our sins.
I can say to a Muslim, "We are fellow God-seekers." With LDS, I can at least go one step further and say, "We are fellow Christ-seekers." It's not an end, but it's at least a place of meeting.