Risk associated with large part of church (7)
I believe the answer is:
chancel
'part of church' is the definition.
('chancel' is part of 'church')
'risk associated with large' is the wordplay.
'risk' becomes 'chance' ('chance' can be a synonym of 'risk').
'associated with' says to put letters next to each other.
'large' becomes 'l'.
'chance'+'l'='CHANCEL'
(Other definitions for chancel that I've seen before include "where choir sits" , "Part of church near altar" , "Area around the altar of a church" , "where sanctuary may be found" , "Place of altar" .)