rest on (someone's) laurels

Translations
почивать на лаврах
After winning the championship, the team decided not to rest on their laurels and continued to train hard.
После победы в чемпионате команда решила не почивать на лаврах и продолжила усердно тренироваться.
Definitions
To stop putting in effort or striving for further achievement because one is satisfied with past successes or accomplishments.
Words
rest

verb
почивать
on

preposition
на
someone

pronoun
чьих-то
s
принадлежность
laurels

noun
лаврах