Protection of Parisian dealer in stolen goods (7)
I believe the answer is:
defence
'protection' is the definition.
(I know that defence is a type of protection)
'of parisian dealer in stolen goods' is the wordplay.
'of parisian' becomes 'de' ('of' in French).
'dealer in stolen goods' becomes 'fence' (I've seen this in another clue).
'de'+'fence'='DEFENCE'
(Other definitions for defence that I've seen before include "This department deals with national protection" , "Resistance to attack" , "The D in MoD" , "Purpose of armed forces" , "Military's purpose" .)