Protect game — it could get you on film (6,4)
I believe the answer is:
screen test
'it could get you on film' is the definition.
The definition suggests a singular noun which matches the answer.
'protect game' is the wordplay.
'protect' becomes 'screen' (screening is a kind of protecting).
'game' becomes 'test' (cricket test match).
'screen'+'test'='SCREEN-TEST'
Can you help me to learn more?
(Other definitions for screen test that I've seen before include "What might precede filming" , "trial for players" , "in which player tries to impress" , "Audition of prospective actor" , "Film audition" .)