Relish hero without ego (6)
I believe the answer is:
savour
'relish' is the definition.
(I know that relish can be written as savour)
'hero without ego' is the wordplay.
'hero' becomes 'saviour'.
'without' is a deletion indicator.
'ego' becomes 'I' ('I' in Latin).
'saviour' with 'i' taken away is 'SAVOUR'.
(Other definitions for savour that I've seen before include "Enjoy taste of (food)" , "Enjoy the flavour" , "Taste to the full" , "Taste with enjoyment" , "Taste or smell something - yummy" .)