Lyrical judge’s fitting end? (6,7)
I believe the answer is:
poetic justice
'fitting end?' is the definition.
'lyrical judge's' is the wordplay.
'lyrical' becomes 'poetic' (I've seen this before).
'judge' becomes 'justice' ('justice' can be a synonym of 'judge').
'poetic'+'justice'='POETIC JUSTICE'
(Other definitions for poetic justice that I've seen before include "Fitting retribution" , "fitting response" , "Appropriate come-uppance" .)