@LolaSmiles
If you don't want to be blunt, could you point out that right now their constant pushing of religion is actually switching you off, but should you want to know more you'll ask them.
This could work. ^
I feel your pain @LemonMeringueThreePointOneFour
I know several women who go to Church, and are Christians, and their DH is a firm atheist. It works for them, because they're not obsessed with Jesus, they just have a relationship with him, and like the company going to Church brings.
However, one woman in particular who goes, and has a partner who also goes to Church, regularly questions these women, as to how they can be with a man who doesn't believe, and says 'why not just leave some literature around for him to find, so he can find Jesus too.' and 'just tell him to come to Church and see for himself...' blah blah blah...
Real goading, nagging, griping, insisting they try to get their husbands on the Christianity train.
Weirdly for someone who is so ' religious' and so obsessed with Christianity, she isn't married. (She wants to be, but her partner won't marry her.)
A few women have thrown that in her face, (usually by the 4th or 5th time she had a bitchfest about their husband not being a believer.) It usually shuts her up.
She often starts again on someone else the following week though. 
Some people are just so infuriating!