Resident has Enid converted to Buddhism (7)
I believe the answer is:
denizen
'resident' is the definition.
(I know that resident can be written as denizen)
'enid converted to buddhism' is the wordplay.
'converted' indicates an anagram.
'to buddhism' becomes 'Zen' (Zen is an example).
'enid' anagrammed gives 'deni'.
'deni'+'zen'='DENIZEN'
'has' acts as a link.
(Other definitions for denizen that I've seen before include "Enid Zen (anag) - inhabitant of a particular place" , "Dweller" , "Inhabitant, occupant" , "Person in foreign country enjoying rights of natives" , "Inhabitant (of the deep?)" .)