Crossword Genius

Cleric envoy I'm exploiting for non-religious marriage service (5,8)

Ross

I believe the answer is:

civil ceremony

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

'cleric envoy i'm exploiting for non-religious' is the definition.
I can't tell whether this definition defines the answer.

'marriage service' is the wordplay.
'marriage' becomes 'civil marriage' (civil marriage is a kind of marriage).
'service' becomes 'ceremony' (I've seen this before).
'civil'+'ceremony'='CIVIL CEREMONY'

Can you help me to learn more?

I've seen this clue in The Irish Times.
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