save (your) bacon

to prevent something very bad from happening to you.

It's a short book but it could save your bacon when you're traveling overseas.

• hit the hay
• hit the headlines
• hit the jackpot
• hit the mark
• hit the nail on the head
• hit the panic button
• hit the right note
• hit the road
• hit the roof
• hit the sack
• hit the skids
• hit the something mark
• hit the spot
• hit the wall
• hit up
• hit where it hurts
• hit where it hurts most
• hit you between the eyes
• hit you like a ton of bricks
• hit you right between the eyes
• hit your stride
• Hobson's choice
• ho-hum
• hoist a few
• hoist with own petard