Seen our works, including religious texts? Not to be shared (5,4)
I believe the answer is:
entre nous
'shared' is the definition.
Both the definition and answer are adverbs.
Perhaps you can see an association between them that I don't see?
'seen our works including religious texts? not' is the wordplay.
I cannot really understand how this works, but
'not' could be 'nt' (synonyms) and 'nt' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
'to be' acts as a link.
Can you help me to learn more?
(Other definitions for entre nous that I've seen before include "Between ourselves (French)" , "private" , "in secret" , "in confidence" .)