This study investigates the radiological protection capabilities of hybrid composites composed of aramid and linen fabrics embedded in an epoxy polymer matrix, reinforced with graphene oxide (GO), through Monte Carlo N-Particle (MCNP) simulations. The research focuses on evaluating the attenuation of gamma radiation by analyzing photon flux between composite layers and energy deposition within the material structure. The MCNP code was employed to model the interaction of gamma photons with the hybrid composite, considering variations in GO concentration, layer thickness, and fabric stacking configurations. The incorporation of GO enhances the mechanical and shielding properties of the composite, leveraging its high electron density and dispersion within the epoxy matrix. Results demonstrate significant photon flux reduction and optimized energy absorption, influenced by the synergistic effects of aramid’s high tensile strength, linen’s sustainability, and GO’s radiation interaction capabilities. The simulations reveal the impact of composite design on shielding efficiency, offering insights into lightweight, flexible materials for radiological protection in medical, aerospace, and industrial applications. This work establishes a foundation for experimental validation and further optimization of GO-reinforced hybrid composites, contributing to the development of sustainable and high-performance radiation shielding solutions.