The study focused on investigating the role of teachers' professionalism in mitigating aggressive behavior among university-level resilient students. The quantitative survey design was followed to conduct this study. The study sample consisted of 237 students with MPhil and PhD degrees (Edu). Three tools (The Brief Resilience Scale, the Aggression Questionnaire, and the Teachers Professionalism Scale) were used in this quantitative study to collect data. Tools were converted to Google Forms and disseminated for data collection. Data were analyzed by utilizing descriptive (percentage, mean, standard deviation) and inferential statistics (Pearson correlation, and Hays Process macro mediation analysis model-4). Results revealed that university students were normally resilient and, there was a significant moderating role of the resilience of students on the relationship between teachers' professionalism and the aggressive behavior of students. The study indicates that university teachers necessitate more interventions to enhance the resilience of graduate students and decrease the level of aggression.