With accent marks:
Нет ху́да без добра́.
There is no bad withouth good.
You can always get something useful from any difficult situation.
The closest English equivalent: every cloud has a silver lining.
Other Russian proverbs
Don't go to the woods if afraid of wolves.
What goes around comes around.
We got what we fought for.
Beast runs towards the hunter.
Water wears away a stone.
You can't command to the heart.
What you will sow, that you will reap.
Patience and labor will grind everything.