Several dozens of monks and laymen handed over a petition to the Indian mission seeking Indian government's intervention to prevent the attacks.
"The LTTE cadres who have killed many civilians Buddhist monks...Are now enjoying the facilities provided by the government after being rehabilitated.
"While there is such a situation in Sri Lanka, we regret that the Indian government has not taken any action to stop these uncivilised action against Sinhala Buddhists", a statement by Sihala Ravaya said.
Sri Lanka said it has sough from India protection for the Lankan travellers and the island's interest in view of the protests which have mounted to coincide with decision time for India over the anti-Sri Lanka resolution at the UN Human Rights Council.
The protest came just hours ahead of an Indian High Commission statement which said "We have noted with concern the recent incidents involving Sri Lankan citizens in Tamil Nadu. The Government of India, in consultation with the concerned state governments, has taken and will continue to take all measures to ensure the safety, security and well-being of Sri Lankan visitors to India, including to Tamil Nadu".