Curse those doing satire in the middle of stage (3,3,7,2)
I believe the answer is:
put the mockers on
'curse' is the definition.
(to put the mockers on is to jinx or curse)
'those doing satire in the middle of stage' is the wordplay.
'those doing satire' becomes 'the mockers' (satire is mockery).
'in the middle of' indicates putting letters inside.
'stage' becomes 'puton' (as in putting on a show).
'themockers' going within 'puton' is 'PUT THE MOCKERS ON'.
(Other definitions for put the mockers on that I've seen before include "Broadcast satire show" , "curse" , "cause it to fail" , "Get satirists performing" .)