Goddess elevated in prayer festival (5)
I believe the answer is:
freya
'goddess' is the definition.
(thesaurus)
'elevated in prayer festival' is the wordplay.
'elevated' says the letters should be written backwards.
'in' says the answer is hidden in the clue.
'ayerf' is hidden in the letters of 'prayer festival'.
'ayerf' in reverse letter order is 'FREYA'.
(Other definitions for freya that I've seen before include "Norwegian goddess" , "Female" , "Norse love goddess" .)