<p>Geologic hydrogen is emerging as a primary energy source, drawing growing interest from the scientific community and the energy sector. One of the primary geochemical mechanisms for natural hydrogen generation is serpentinization, which is the hydration of mafic and ultramafic rocks. The United Arab Emirates (UAE) is home to one of the best-preserved ophiolite blocks in the world, making it a promising area for geologic hydrogen exploration. In this study, we apply magnetotelluric (MT) phase tensor analysis to detect electrical anisotropy associated with serpentinization in the mantle derived peridotite sequence. Electrical anisotropy in these rocks arises from the preferred alignment of olivine crystals, the orientation of hydrous minerals such as serpentine group minerals, and fracture-controlled alteration pathways. Current approaches for detecting serpentinization have primarily focused on changes in bulk physical properties, often overlooking the directional dependencies and complexities introduced by anisotropy. Here, we present a novel geophysical framework based on the MT phase tensor, to identify serpentinized zones within source rocks in geologic hydrogen systems and possibly identify potential hydrogen-bearing zones. Using MT field data from the UAE, we demonstrate that phase tensor analysis effectively identifies anisotropic conductivity zones associated with serpentinization. The MT phase tensor approach we propose offers a powerful tool and effective framework for assessing both geologic hydrogen generation and its full lifecycle.</p>