This research explores the concept of religious universalism and its potential impact on expressions of Islamic devotion within Indonesia, Malaysia, and Thailand. The study aims to investigate how Islamic practices and beliefs can serve as a deterrent against the proliferation of religious extremism. By examining various dimensions of Islamic religiosity in these countries, this research seeks to uncover the ways in which a broad and inclusive interpretation of religion can contribute to countering the influence of radical ideologies. Through an analysis (...) of religious rituals, educational frameworks, and cross-faith engagements, this study offers insights into the capacity of religious universalism to mitigate the advancement of religious extremism across diverse cultural and social contexts. Contribution: This research enhances our understanding of how universality of religion can serve as a deterrent against religious extremism by examining its manifestations within the contexts of Indonesia, Malaysia, and Thailand. The findings offer practical insights and recommendations that can inform policies and initiatives aimed at fostering tolerance, inclusivity, and harmony within diverse religious societies. (shrink)