reste immobile
I would stay still if I were you.
À ta place, je resterais immobile.
— The Lord of the Rings: The Two Towers (2002)
Running away will be worse, stay still.
S'enfuir ne ferait qu'empirer les choses ; reste immobile.
— Neighboring Sounds (2012)
Stay still, running away won't help.
Reste tranquille, t’enfuir ne servira à rien.
— Neighboring Sounds (2012)
That's because you never stay still.
C’est parce que tu ne tiens jamais en place.
— My Neighbor Totoro (1988)
Stay still, I'll take a photo of you.
Ne bouge pas, je vais te prendre en photo.
— The Great Beauty (2013)
Il ne tient pas en place.