Non-religious person to share a table (11)
I believe the answer is:
rationalist
'non-religious person' is the definition.
(I know that rationalist is a type of nonreligious person)
'share a table' is the wordplay.
'share' becomes 'ration' (a ration is a share of a limited resource).
'table' becomes 'list'.
'ration'+'a'+'list'='RATIONALIST'
'to' acts as a link.
(Other definitions for rationalist that I've seen before include "Logical thinker" , "Reasoning person" .)