Conflict lets US off (6)
I believe the answer is:
tussle
'conflict' is the definition.
(tussle is a kind of conflict)
'lets us off' is the wordplay.
'off' is an anagram indicator.
'lets'+'us'='letsus'
'letsus' with letters rearranged gives 'TUSSLE'.
(Other definitions for tussle that I've seen before include "scrap" , "'Physical fight, struggle (6)'" , "Brawl" , "Rough and tumble" , "Struggle like wrestling bout" .)