This study investigates the role of Islamic education in encountering the threat of radicalism that is increasing in this era of globalization. This problem needs to be solved in order to overcome the radicalism that exists, especially in education.The students as the future generation of Indonesia have been influenced by too much of radical thinking. Currently, radical thinking has sprung up in educational institutions as well.This research studies the use of the Asah Potential Fithrah (APF) method in Islamic education to counter radicalism. Data was collected through interviews with principals from Islamic education institutions in Lampung. Islamic education has implemented democratic learning with the so-called APF method. The APF method is applied in the learning process based on the human identity which is born in a state of fithrah. This research shows that the application of APF in Islamic education among graduates can result in tolerant attitude, enhance their ability in the mastery of science, make them possess higher skills, and cultivate noble character. This research implies that radicalism can be overcome by applying the APF method which is in harmony with human nature.The deviation of human behavior in the form of violence is against humanity and Islam.