The stress levels in emergency services are enormous. The resulting stress can range from psychological irritation to burnout. This study examines the importance of resilience in the German EMS and its significance for the risk of irritation and burnout among EMS personnel. A quantitative cross-sectional online survey was conducted among 285 EMS personnel in Germany. Resilience was measured by the RS-13 Scale, irritation by the Irritation Scale (IS), and burnout by the Maslach Burnout Inventory (MBI). Sociodemographic and job-related data were also collected. A classification into resilient groups was used to compare stress levels. More than one-third (39%) of the participants had a low level of resilience. EMS personnel with high levels of resilience had significantly lower scores on the cognitive and emotional irritation dimensions, as well as on the burnout dimensions of emotional exhaustion and cynicism. Resilience plays an important role in the safety culture of emergency services. The results support the hypothesis that high levels of resilience lead to less stress and help people cope better with stress. Almost two-fifths of the participants had lower resilience, underscoring the need for safe communication and targeted measures to strengthen resilience. Regular training, a supportive work environment, and promoting team cohesion and social support can improve emergency responders' mental health and job performance. Future research should develop specific intervention strategies and evaluate their effectiveness to ensure the long-term health of emergency responders and improve the quality of emergency care.