In a medium bowl, combine cilantro, olive oil, soy sauce, orange juice, lime juice, garlic, jalapeno, cumin and 1 teaspoon pepper; set aside ½ cup of the mixture in the refrigerator until ready to serve.
In a gallon size Ziploc bag or large bowl, combine steak and remaining cilantro mixture; marinate for at least 4 hours to overnight, turning the bag occasionally. Drain the steak from the marinade.
Preheat grill to medium high heat. Using paper towels, pat both sides of the steak dry; season with salt and pepper, to taste.
Add steak to grill, and cook, flipping once, until desired doneness, about 6 minutes per side for medium rare. Let rest 5 minutes.
Thinly slice steak against the grain and serve with reserved ½ cup cilantro mixture.