In a joint statement, the trio agrees to coordinate efforts to ensure Syria's security and stability after a trilateral summit in the Turkish capital, Ankara.
The Syrian Observatory for Human Rights reported "around 3,000 people" returned to the northern Hama and the southern Idlib countryside from other areas under regime control.
Syrian regime and Russian forces have killed at least six civilians in northwestern Idlib province, according to a war monitor.
Turkish and Russian leaders are going to discuss a possible purchase of fifth-generation fighter jets Su-57 and 4++ generation fighter jets Su-35 in the sidelines of a trilateral summit on Syria.
Mevlut Cavusoglu, Sergey Lavrov speak over the phone to discuss the latest developments in the war-torn country.
Russia's defence ministry said Syrian regime forces will unilaterally cease-fire in the "de-escalation zone" in Idlib region on Saturday 0300 GMT.
Assad's forces pressed ahead with their military offensive in Idlib, seizing a cluster of villages on the southeastern edges of the province on Thursday as the overall civilian death toll from the offensive rose further.
The regime’s airstrikes in Idlib’s Maarat al Numan also injured 34 others, said British-based war monitor, Syrian Observatory for Human Rights (SOHR).
Leaders of both countries agree on protecting civilians in Idlib and to continue to cooperate to avoid a new humanitarian crisis in the region.
The Syrian Observatory for Human Rights said opposition forces attacked regime positions in the south of Idlib, killing at least 51 combatants on both sides, as Russian-backed regime forces have been making gains in the last opposition stronghold.
The car bomb exploded in the rebel-held Syrian city of Idlib, killing two people and injuring at least 11 others.
The regime's brutal push into northwestern Syria has seen over 800 people killed and thousands displaced in just four months as it takes over rebel-held territory in Idlib and Hama, violating a ceasefire in the de-escalation zone.
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