Prince's saying more protection (7)
I believe the answer is:
padding
'more protection' is the definition.
(padding protects something)
'prince's saying' is the wordplay.
'prince' becomes 'p' (abbreviation).
'saying' becomes 'adding' (adding is a kind of saying).
'p'+'adding'='PADDING'
(Another definition for padding that I've seen is " Soft stuffing".)
I've seen this clue in The Guardian.
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