Add rice to a saucepan or steamer along with the cajun seasonings and lemon juice. Add water and cook until tender.
Heat oil in a medium non-stick pan over medium-high heat. Add the bell pepper and onion and sauté for about 5 minutes, or until peppers soften slightly. Add the garlic and sauté for one minute.
Add chopped tomato and stir; allow juice to cook down slightly.
Add in the rice, stirring constantly until the rice is warm.