Ro is a bit of a contradiction. in the very same episode she first appears in, she states that she grew up beleiving that being a bajoran was shameful because of their 'weakness', ashamed of her heritage, and makes statements regarding the bajoran refugees that expresses attitudes of the sort (and clearly seperating herself from them), yet she also goes out of her way to make statements to others in an effort to reinforce her 'bajoran-ness'. it is clear that she is supposed to be working through some fairly major emotions.
but i would assuem that since she says that she grew up considering being bajoran a shameful thing (since she was seven, according to her) i'd guess that she probably didn't give much credence to bajoran religious beliefs in general. especially since bajor had been a so centered on art, culture, and faith prior to the occupation, and those elements are likely what she would have considered part of the problem.