Help beat sabotage (4)
I believe the answer is:
abet
'help' is the definition.
(I've seen this in another clue)
'beat sabotage' is the wordplay.
'sabotage' is an anagram indicator (I've seen 'sabotaged' mean this).
'beat' is an anagram of 'ABET'.
(Other definitions for abet that I've seen before include "Help a criminal" , "Give aid to" , "Aid as in committing crime" , "Egg on" , "Assist criminally" .)