Abstract: Background The public health emergencies such as the COVID-19 pandemic resulted in mental and psychological ramifications on the healthcare professionals. The pre-licensure nursing students found themselves not only fighting against the baneful virus but also weak ego resilience. At this point, enriching the pre-licensure nursing students with psychological first aid (PFA) could help them to recover from the feeling of psychological distress and improve their resilience capacity to encounter any upcoming outbreaks. Methods A quasi-experimental two groups, a pre-post-test study was used in which sixty-four pre-licensure nursing students completed a baseline survey which revealed high levels of psychological distress and low resilience capacity due to the COVID-19 crisis. The study group engaged in the Psychological First- aid Intervention (PFA) at the end of the clinical practicum course period, while the comparison group received routine psychological support. Results A significant reduction in the psychological distress levels among students in the PFA group (FET=7.83, P = 0. 001). Likewise, significant improvements in the students' resilience capacity level immediately after the intervention (FET=3.34, P = 0.019) and during the two-month follow-up (FET=12.94, P = 0. 001). The implementation of PFA enhanced the pre-licensure nursing students' psychological health status and resilience capacity levels after their clinical training amid the ambiance of the COVID-19 crisis. Conclusion The PFA effectively fostered the pre-licensure nursing students’ recovery from the COVID-19 related- psychological distress and improve their resilience capacity. The application of RAPID model is recommended to reduce stress and prevent burnout among novice and future nurses who show signs of psychological exhaustion.