This study aims to investigate the relationship between leader-member exchange, employee resilience, employee engagement, and extra-role performance in the banking sector in Saudi Arabia. Specifically, it looks at the function of employee engagement as a mediator in the aforementioned relationships. A questionnaire was used to collect data from 186 participants. The proposed model has been analyzed using PLS-SEM as in Smart-PLS. This study found that both leader-member exchange and employee resilience have effects on employees' extra-role performance through employee engagement. This study is useful as it identifies two key determinants of employee engagement and how, in turn, employee engagement influences their extra-role performance. Performance can be improved by identifying variables or drivers that raise employee engagement levels. Previous research focused on Western nations, while this study looked at organizations in Saudi Arabia. Further implications, limitations, and future directions for research are discussed.