A resolution forwarded by the Organization of Islamic Cooperation (OIC) was adopted by a vote of 122 to 10 with 24 abstentions on Sunday, calling for Myanmar to grant access to humanitarian aid and to give Rohingya Muslims full citizenship rights.
The resolution also calls on UN Secretary General Antonio Guterres to assign a special envoy to the country.
China, Russia, Cambodia, Laos, the Philippines, Vietnam, Myanmar, Belarus, Syria and Zimbabwe voted against the resolution.
Over that past three months, government troops, apart from raping, have been committing killings, making arbitrary arrests, and carrying out mass arson attacks to destroy houses in predominantly-Rohingya villages in Rakhine.
More than 655,000 Rohingya Muslims have so far fled the predominantly-Buddhist Myanmar to neighboring Bangladesh since then.