Honestly, if someone does not like my beliefs that's fine. I'm not one to start anything over religion or politics even more so outside of my house. If someone is an Atheist (I have good friends who are) that's fine with me I'm not going to force anything on them. If they asked about what I believe I would tell them.
I have had some people just go off on me for believing in God and I have had other Christians go off on me also for not being like they are. It's been interesting, to say the least. I have learned that there are some who will listen for so long before they just snap a little at what you are saying.
Don't let people get to you though no one can really force you to stop believing 100%.