There has been a lot of questions on Florida's "Stand Your Ground Law" due to the Zimmerman case. Hopefully this will provide some insight:

According to Florida Statute 776.012, a person may use such force as she reasonably believes to be necessary to defend herself or another; however, she is justified in the use of deadly force only if she reasonably believes that such force is necessary to prevent imminent death or great bodily harm to herself or another or to prevent the imminent commission of a forcible felony. According to Florida Statute 776.08, a "forcible felony" is defined to include treason, murder, manslaughter, burglary, robbery, rape, aggravated assault, and aggrevated battery.