Wash your hands, clean your cooking area, and wash vegetables.
Peel and trim the cacti. Wash thoroughly. Cut the cacti in small squares. In a sauce pan bring about 3 cups water to a boil. Add cacti and boil for 15 minutes. Remove from heat and drain in a colander.
Heat olive oil in a skillet. Add the onion, tomatoes, chile pepper, bell pepper, and pepper, and cilantro and saute until onions are translucent.
Add the drained garbanzo beans, the cacti, and the chopped cilantro to the onion mixture. Add 3 cups water and simmer for 15 minutes.