Pair of the French get nothing (3)
I believe the answer is:
Here is my best explanation:
'pair' is the definition.
('duo' can be a synonym of 'pair')
'of the french get nothing' is the wordplay.
'of the french' becomes 'du'.
'get' is a charade indicator (letters next to each other).
'nothing' becomes 'o' (looks like zero - 0).