respectful manner that doesn't rock the boat in any way. No matter how you try to spin it, your argument still keeps coming down to the fact that you don't like the idea of someone non believing things that you strongly believe.
Even if someone was somewhat hostile (within reasonable levels), isn't it better for other students to experience minor tests of their faith in an environment like BYU's than elsewhere? There are many BYU grads who fall away later because they can't handle finding out the truth about the world after being sheltered for most of their life. Their tree of faith had no roots because it was never subjected to any wind.
The undeniable truth is that very, very, very few humans believe in the LDS faith. These students are eventually going to come face to face with that other 99.98% of the population sooner or later so why not let them practice a little bit of introspection and standing up for their beliefs (again, within reason) inside the highly controlled environment of BYU? If someone else's nonbelief is truly a threat to my belief, then I never had any to begin with.