Portobello Mushroom Fajitas

Name: Portobello Mushroom Fajitas
Ingredients: * 1 tablespoon olive oil; * 4 cup ( ) slice portobello mushroom (about 8 ounce); * 1 cup vertically sliced red onion; * 1/2 cup ( ) green bell pepper strip; * 1/2 cup ( red bell pepper strip; * 2 garlic clove, minced; * 3 tablespoon chopped fresh cilantro; * 2 tablespoon fresh lime juice; * 1/4 teaspoon salt; * 1/4 teaspoon freshly ground black pepper; * 1 teaspoon ground cumin; * 1 serrano chile, minced; * 12 ( ) flour tortilla; * 1/2 cup salsa