Greek god, resentful, rises (4)
I believe the answer is:
eros
'greek god' is the definition.
(Eros is an example)
'resentful rises' is the wordplay.
'resentful' becomes 'sore' (I've seen this before).
'rises' is a reversal indicator.
'sore' in reverse letter order is 'EROS'.
(Other definitions for eros that I've seen before include "God of love - example of 1 down" , "Circus boy" , "London landmark" , "Asteroid - Greek god of love" , "Arrow-shooting god" .)