Rest from dispute, leading retreat (3,2)
I believe the answer is:
let up
'rest' is the definition.
(thesaurus)
'from dispute leading retreat' is the wordplay.
'from' indicates the answer is hidden within the clue.
'retreat' is a reversal indicator.
'putel' is hidden within 'dispute leading'.
'putel' backwards is 'LET-UP'.
(Other definitions for let up that I've seen before include "Relax one's efforts" , "Abatement" , "Alleviate" , "Slackening" , "Die away, ease off" .)