This paper focus on the role of the Friday's prayer ritual practiced by the Sunni Muslim of Rio de Janeiro has in the construction of their religious identities. Considering that the idea of obtaining religious knowledge of the Sunni Tradition plays an important role in the community's members discourses, the various forms that the knowledge is circulated, appropriated and mobilized in the prayer's ritual create cumulative differences that give different positions, powers and identity to the members of the Sunni community of Rio de Janeiro, according to their ethnicities and ways of becoming Muslim (having a Muslim heritage or being Converted).
Islam; ethnicity; religious knowledge; prayer