Easy victim called out for help (7)
I believe the answer is:
succour
'for help' is the definition.
(succouring is a kind of helping)
I cannot understand how the remainder of the clue works.
(Other definitions for succour that I've seen before include "Help, relief" , "Help given in time of need" , "helping hand" , "Relief in time of distress" , "Comfort" .)