guard against (?.)
- advocate
- champion
- clear the decks
- consider every angle
- defend
- flank
- forearm
- guard
- hedge
- leave out nothing
- make sure
- make sure against
- overlook no possibility
- play safe
- prepare for
- protect
- provide a hedge
- provide against
- provide for
- reef down
- safeguard
- screen
- secure
- shield
- shorten sail
- take measures
- take precautions
- take steps