It's rude and self-serving to assert your beliefs on them. Let them pray. Ignore it. It's not about you. This situation comes up a lot in life, and that's just how it is. If they don't insist you pray with them or involve you, that's their business. That's what it takes to get along in with other people. It's hard to find another living soul who has the exact same set of values as you, and dictating what others should and should not do is why wars happen.
If The Flintstones have taught us anything, it's that pelicans can be used to mix cement.
-Homer Simpson
-Homer Simpson
