"The party said the film "might lead [people] to deviate from Islam and the prophet",
Well isn't that a religion that inspires a lot of certainty about the unassailable truth of its central tenets.

They are unintentionally highlighting the fragile, tenuous, weak nature of their beliefs:

"The characterisation of the naat-reader in the film is such that it can cause discomfort to the public and might lead them to deviate from Islam and Prophet (Muhammad)," the group said in a statement.

"Thus this movie must not be released as it could otherwise be a grave test of the Muslims of the Islamic Republic of Pakistan."

I mean ... a religion that lives in terror of people being "uncomfortable" and inherently fears failing a trivial "test"? Man, that's impressive! (NOT!)

Of course it is. Something not right about the place. My wife always used to feel ill whenever she flew over Islamabad!