Crossword Genius

Religious follower elected to quit order (8)

Ross

I believe the answer is:

disciple

I'm a little stuck... Click here to teach me more about this clue!

'religious follower' is the definition.
'disciple' can be an answer for 'follower' (disciple is a kind of follower). I am not sure about the 'religious' bit.

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for disciple that I've seen before include "Student - follower" , "Pupil - follower" , "Adherent who helps to spread the doctrine" , "Learner in school" , "Devout follower" .)

I've seen this clue in The Telegraph.
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