It's scary getting converted in this part of church (8)
I believe the answer is:
sacristy
'this part of church' is the definition.
('sacristy' is part of 'church')
'it's scary getting converted' is the wordplay.
'getting' means one lot of letters go next to another.
'converted' indicates an anagram.
'its'+'scary'='itsscary'
'itsscary' anagrammed gives 'SACRISTY'.
'in' is the link.
(Other definitions for sacristy that I've seen before include "Satyr (sic) found in church storage room" , "Where sacred vessels are kept in church" , "Church robing room" , "Room in church for vestments etc." , "Part of church" .)