Inca maligns corrupt religion (11)
I believe the answer is:
anglicanism
'religion' is the definition.
(Anglicanism is an example)
'inca maligns corrupt' is the wordplay.
'corrupt' is an anagram indicator.
'inca'+'maligns'='incamaligns'
'incamaligns' with letters rearranged gives 'ANGLICANISM'.
(Other definitions for anglicanism that I've seen before include "Form of Christianity" , "English religion" .)