by surprise
Le chat m'a prise par surprise !
The cat took me by surprise!
Le chat m'a pris par surprise !
The cat caught me by surprise!
Notre armée prit le royaume par surprise.
Our army took the kingdom by surprise.
Voilà comment on attaque par surprise.
That's how you attack by surprise.
— The Garden of Sinners, film 5 : Spirale contradictoire (2008)
I was taken by surprise.
It took me by surprise.
You took me by surprise.
He took me by surprise.
J'ai un gars qui a un œil sur nous, mais on veut pas être pris par surprise.
I've got a guy keeping an eye on us, but we don't want to be caught off guard.
— En terrain miné (2014)
Quelque chose finit toujours par nous prendre par surprise.
Something always ends up taking us by surprise.