Peculiarities of surreal satire around religious instruction (8)
I believe the answer is:
rarities
'peculiarities' is the definition.
('rarity' can be a synonym of 'peculiarity')
'surreal satire around religious instruction' is the wordplay.
'surreal' is an anagram indicator (I've seen this in other clues).
'around' indicates putting letters inside.
'religious instruction' becomes 'ri' (abbreviation).
'satire' with letters rearranged gives 'raties'.
'raties' placed around 'ri' is 'RARITIES'.
'of' is the link.
(Other definitions for rarities that I've seen before include "Scarce and valuable things" , "pearls" , "collector's items" , "Uncommon things" , "Things which seldom occur" .)