you will remember it
Tu t'en souviendras.
You'll remember it.
— Le repentir (1987)
Tu t'en souviendras ?
Will you remember?
— Les Anges déchus (1995)
Comme ça, tu t'en souviendras.
That way, you'll remember.
— Nobody Knows (2004)
Tu t'en souviendras toute ta vie.
You’ll remember it for the rest of your life.