The phrase "religious nuts" is a way to describe someone who is extremely devoted or involved in their religion to the point where they may behave or think in extreme or irrational ways.
Sentences with «religious nuts»
It is crazy to let a small number of religious nuts from a small rural state have this much say in an election. (religion.blogs.cnn.com)
Religious nut cases and the mentally disturbed should never be allowed to have any weapon. (religion.blogs.cnn.com)