Capital of ancient Syria (7)
I believe the answer is:
antioch
'capital of ancient syria' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for antioch that I've seen before include "Place for early Christians" , "early Christian centre" , "Ancient name for Antakya in Turkey" , "Early centre of Christianity" , "Ancient Syrian city" .)