To dream of your religion represents your faithfulness and sense of spirituality. Perhaps your dream is telling you to be more religious or that you need to be more spiritual. Alternatively, the dream may be a metaphor for some behavior or habit which you are “religious” about.
To dream about a different religion from your own suggests that you need to incorporate some key component of that religion in your own life. The dream may also mean that you need to be more accepting and tolerant of the differences in humanity.