Quantitative results are reported of a longitudinal evaluation of a resilience training as a possible method to prevent violent radicalization (Diamant; SIPI, 2010). A total of 46 male and female Muslim adolescents and young adults with a migrant background participated. Results show that the training significantly increased participants' reports of agency and a marginal increase was found in reported self-esteem, empathy and perspective taking but also narcissism. Attitudes toward ideology-based violence and own violent intentions were significantly lower after the training than before. Higher reports of empathy were related to less positive attitudes toward ideology-based violence. These results suggest that an intervention aimed at empowering individuals in combination with strengthening empathy is successful in countering violent radicalization.