Hide clubs during invasion (4,5)
I believe the answer is:
take cover
'hide' is the definition.
(I've seen this before)
'clubs during invasion' is the wordplay.
'clubs' becomes 'c' (abbreviation in card games).
'during' is an insertion indicator.
'invasion' becomes 'takeover' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'c' going within 'takeover' is 'TAKE COVER'.
Can you help me to learn more?
(Other definitions for take cover that I've seen before include "Protect oneself" , "Find shelter as, say, from bomb" , "Find a place to shelter" , "Hide" , "Seek shelter - buy insurance" .)