Two rockets hit the Russian embassy in the Syrian capital of Damascus on Tuesday, AFP reported.
The shells fell on the Russian embassy as several pro-government supporters had organised a rally outside the embassy.
"Two shells landed on the territory of the embassy this morning," Eldar Kurbanov, First Secretary of the Russian Embassy in Damascus, told Russia's Tass news agency. No injuries have been reported so far.
The rocket strikes on the Russian embassy come after Syria's Al Nusra Front called for retaliatory action in the wake of airstrikes in the country.
In an audio message released on Monday, Abu Mohamed al-Jolani, the head of Al-Nusra Front, called for attacks on Russian civilians and soldiers.
"If the Russian army kills the people of Syria, then kill their people. And if they kill our soldiers, then kill their soldiers. An eye for an eye," the group leader said.
The group also called for attacks on the Alawite sect, a minority community which Syrian President Bashar al-Assad belongs to, as per reports.
The Al-Nusra Front is an offshoot of the Al-Qaeda.
Russia began airstrikes on Isis targets in Syria on 30 September.
The Russian foreign ministry called the shelling of its embassy an act of terrorism.
"This is an obvious act of terrorism, probably aimed at intimidating supporters of the fight against terrorism," Russian Foreign Minister Sergei Lavrov said, according to RIA Novosti.
#BREAKING Two rockets hit Russian embassy in Damascus: AFP photographer
— Agence France-Presse (@AFP) October 13, 2015