Where one finds shops are protecting rotter (6)
I believe the answer is:
arcade
'where one finds shops' is the definition.
'arcade' can be an answer for 'shops' (I've seen this before). I'm unsure of the 'where one finds' bit.
'are protecting rotter' is the wordplay.
'protecting' is an insertion indicator (inserted letters are held or protected).
'rotter' becomes 'cad' (I've seen this in another clue).
'are' enclosing 'cad' is 'ARCADE'.
Can you help me to learn more?
(Other definitions for arcade that I've seen before include "Gallery" , "covered avenue of shops" , "shopping precinct" , "Here one may find shops" , "games area?" .)