For I will do mine - Tradução em português

I was re-watching The Count of Monte Cristo and, in the scene bellow, the main character says (1:29):

"What makes you a man is what you do when that storm comes. You must look into that storm and shout as you did in Rome. Do your worst, for I will do mine! Then the fates will know you as we know you: as Albert Mondego, the man! "
Which is the best equivalent Portuguese expression for "for I will do mine"?

Thank you in advance!