Bishop rushed to get prepared (6)
I believe the answer is:
braced
'prepared' is the definition.
(bracing is a kind of preparing)
'bishop rushed' is the wordplay.
'bishop' becomes 'b' (abbreviation used in chess).
'rushed' becomes 'raced' ('race' can be a synonym of 'rush').
'b'+'raced'='BRACED'
'to get' acts as a link.
(Other definitions for braced that I've seen before include "Buttressed" , "made stronger" , "Prepared for a setback" , "Supported, gave firmness to" , "Red cab being supported in position" .)