Dynasty celebration recalled deity (3,3)
I believe the answer is:
sun god
'deity' is the definition.
(sun god is a kind of deity)
'dynasty celebration recalled' is the wordplay.
'dynasty' becomes 'Sung' (Chinese dynasty).
'celebration' becomes 'do' (I've seen this in other clues).
'recalled' is a reversal indicator (to recall can mean to bring something back).
'do' back-to-front is 'od'.
'sung'+'od'='SUN-GOD'
(Other definitions for sun god that I've seen before include "Amen-Ra" , "RA" .)