Form of prayer that was illuminating to a degree? (6)

I believe the answer is:

litany

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'form of prayer' is the definition.
(I've seen this before)

'was illuminating to a degree?' is the wordplay.
'was illuminating' becomes 'lit' (I've seen this before).
'to a degree?' becomes 'any' (I can't explain this - if you can you should believe this answer much more).
'lit'+'any'='LITANY'

'that' acts as a link.

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(Other definitions for litany that I've seen before include "petitions" , "Long list - prayer" , "Repeated prayers" , "Supplicatory prayer" , "long address" .)

I've seen this clue in the Evening Standard.

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