Split from singular church doctrine (6)
I believe the answer is:
schism
'split' is the definition.
('schism' can be a synonym of 'split')
'singular church doctrine' is the wordplay.
'singular' becomes 's' (abbreviation sometimes used in dictionaries).
'church' becomes 'ch' (common abbreviation).
'doctrine' becomes 'ism' (suffix for disciplines or schools of thought).
's'+'ch'+'ism'='SCHISM'
'from' is the link.
(Other definitions for schism that I've seen before include "Dividing of group into opposing factions" , "Split, often ecclesiastical" , "Splinter group" , "Serious split in a group" , "Deep division" .)