English Translation
He was robbed of all his money.
to steal /= to rob
to steal - secretly
to rob - forcefully
so maybe:
Hänen kaikki rahansa rosvottiin. or
Kaikki hänen rahansa ryöstettiin.
I’m not sure.
Although I agree that there is a difference between rob and steal, I think “to be robbed of” can be used in a wider sense. Mind you, you can’t say “he was stolen of all his money”.
Your suggestions look fine to me, a non-native.