What is the meaning of ra in Islam?

Understanding the Abbreviation RA in Islam

In reference to the companions of the Prophet (ﷺ), the abbreviation RA stands for Radeyallāhu ′Anhu (رضي الله عنه), which means "May Allah be pleased with him." For the female companions, the corresponding Arabic phrase is Radeyallāhu ′Anha (رضي الله عنها), translating to "May Allah be pleased with her."