Excellent goddess inspiring one to shine (7)
I believe the answer is:
radiate
'shine' is the definition.
(synonyms)
'excellent goddess inspiring one' is the wordplay.
'excellent' becomes 'rad' (slang term).
'goddess' becomes 'ate' (I've seen this before).
'inspiring' indicates putting letters inside.
'one' becomes 'i' (roman numeral).
'rad'+'ate'='radate'
'radate' enclosing 'i' is 'RADIATE'.
'to' is the link.
(Other definitions for radiate that I've seen before include "Give out (light, etc)" , "Disseminate" , "Emit light/heat" , "A tirade (anag)" , "Spoke out" .)