The participants agreed to launch the works of revising the country's Constitution, and asked the whole world to help Syria to recover from the civil war that lasted seven years.
"We all share the same goal: to see peace and stability restored in our homeland and to live peacefully side by side free from violence and terrorism in all its forms and manifestations", delegates of the congress said in a joint address published by the Russian Foreign Ministry.
The Syrian National Dialogue Congress was held in Russia's Sochi yesterday. The talks were moderated by Russian Federation and Iran, on the side of Damascus, and Turkey, which aligns itself with several armed opposition groups.
About 1,600 delegates representing organizations approved by the Syrian government also participated in the conference.
Syria's major opposition groups, who boycotted the event, rejected the proposal.
The deployment in the northwestern region was launched last October under a deal reached with Russian Federation and Iran during the Syrian peace talks in the Kazakh capital, Astana.
The communiqué finalized at the Syrian National Dialogue Congress in Sochi includes 12 principles to settle the Syrian crisis that were worked out within the UN-backed Geneva process, UN Special Envoy for Syria Staffan de Mistura said on Tuesday.
Other Syrian opposition members based in Turkey staged a protest, refusing to leave the Sochi airport on arrival when they saw pictures of the Syrian flag.
"Still the agreements they reach are much more stable, durable and reliable than the ones the like-minded nations adopt at selective meetings instead of the Syrian people", Lavrov said.