keep calm
US /kiːp kɑːm/
UK /kiːp kɑːm/

1.
ruhig bleiben, Gelassenheit bewahren
to remain relaxed and not get excited or worried
:
•
No matter what happens, just keep calm and carry on.
Egal was passiert, bleib ruhig und mach weiter.
•
It's important to keep calm during an emergency.
Es ist wichtig, in einem Notfall ruhig zu bleiben.