get off lightly
verb1
Idiomatic To end up with a mild punishment, or without serious harm.
- My cousin got off lightly with a restraining order after he broke the boy’s leg.
- @Socrates Got off lightly, all things considered. They just want me to drink this hemlock stuff. BRB. 8.11am, March 22, 399 BC2012, Kelvin MacKenzie, Chas Newkey-Burden, The Twitter History of the World, London: John Blake, →ISBN, page 12: