Marinate the steak with,pepper, thin soy sauce for about 20 minutes before you cook.
Heat a large grill pan over medium-high heat. Coat pan with cooking spray. Add steak to pan; cook 6 minutes each side or until desired degree of doneness. Remove steak from pan; let stand 5 minutes. Cut steak diagonally across grain into thin slices.

Combine juice with the ingredients in a small bowl, stir with a whisk. Add the steak with the mixture, combine all, add the cilantro leaves and mint leaves mix well.

And serve with hot bread or anything you like.