Archdeacon lied, perhaps, after conclusion of divine service (8)
I believe the answer is:
evensong
'service' is the definition.
(thesaurus)
'archdeacon lied perhaps after conclusion of divine' is the wordplay.
'archdeacon' becomes 'ven'.
'lied perhaps' becomes 'song' (lied is a kind of song).
'after' means one lot of letters go next to another.
'conclusion of' indicates one should take the final letters.
The last letter of 'divine' is 'e'.
'ven'+'song'='vensong'
'vensong' put after 'e' is 'EVENSONG'.
(Other definitions for evensong that I've seen before include "Anglican service" , "Religious service" , "Church service late in the day" , "Service of evening prayer in Church of England" , "6 [SERVICE] ?" .)