Facing fast bowlers, say, closing eyes briefly? (7)
I believe the answer is:
batting
I believe this clue is a double definition.
'facing fast bowlers' is the first definition.
(cricket term)
'say closing eyes briefly?' is the second definition.
(batting one's eyelashes)
(Other definitions for batting that I've seen before include "At the crease" , "in front of the stumps" , "Fluttering" , "Flirting with eyelids" .)