This roundtable discussion focused on critically exploring evidence-building within the context of faith and religion engagement in gender-based violence (GBV) prevention. Within this framework, experts were brought together to delve into what decolonial approaches to evidence mean and examine their relevance in the Global South. Participants shared practices and local experiences that offered innovative perspectives on evidence-building, aiming to generate new ways of understanding and applying evidence-based strategies in GBV prevention.