An efficient and robust technique is presented in this study to control the voltage and current of the inverters in MasterSlave Organized AC Smart Island. In the smart island, voltage/frequency and current control of inverters-based renewable energy resources are challenged by parametric uncertainty and external disturbances. It is consequently essential to adopt a stable and robust control approach. This study proposes an adaptive hybrid robust controller using a Sliding Mode Controller (SMC) and backstepping controller. SMC can also be robust to many external disturbances and uncertainties. The structure of the Backstepping Sliding Mode Controller (BSMC) includes an adaptive mechanism. The switching gain is adaptively updated in real-time for the adaptive BSMC. The Lyapunov theory has been used to prove the closed-loop system's stability. Matlab/Simulink is used to implement the suggested control technique, and several case studies are analyzed to evaluate its effectiveness. According to simulations, the suggested controller maintains islanded microgrid stability by controlling voltage and current precisely regardless of external disturbances and uncertainty.