He said "clouds of fear and insecurity" are looming large on the minority communities throughout India.
"We are dismayed to learn that a Catholic nun in Chhattisgarh was sexually assaulted and found gagged on the night of June 19," Rev Filipe Neri Ferrao said in a statement issued here today.
"This dastardly act causes revulsion all the more as it was carried out on a person who was dedicated to the service of the poor and the lower-middle class people of the locality," he added.
"We pray that clouds of fear and insecurity looming large on the minority communities throughout our country maybe dispelled and we may soon live in an atmosphere of freedom, peace and justice," Ferrao said.
The 48-year-old survivor, who worked as a nurse at a hospital in Raipur, was allegedly sexually assaulted by two unidentified persons.