Groups having faith in difficult situations (5)

I believe the answer is:

cults

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

'groups having faith' is the definition.
I can't tell whether this defines the answer.

'in difficult situations' is the wordplay.
'in' indicates the answer is hidden within the clue.
'CULTS' is hidden within 'difficult situations'.

Can you help me to learn more?

(Another definition for cults that I've seen is " Sects".)

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