Wiktionary
rest in peace
vb. 1 A blessing or expression of hope that a deceased person is at peace. 2 (context euphemistic English) To have passed away, or died.
Wikipedia
Rest in Peace (song)
"Rest in Peace" is the first single from Extreme's third studio album III Sides to Every Story. The single was released in 1992.
Rest in peace
"Rest in peace" ( Latin: Requiescat in pace is a short epitaph or idiomatic expression wishing eternal rest and peace to someone who has died. The expression typically appears on headstones, often abbreviated as R.I.P. or RIP or Rip.
Usage examples of "rest in peace".
They weren't about to let her men rest in peace, of course--not if they could help it.
Let her rest in peace, and do not pursue me any longer, unless you would drive me into my grave as you have driven her.