The shells fell on a neighbourhood on the edges of Damascus, hitting a Maronite church and nearby Catholic church on Sunday.
"Part of the war in Syria is to live under indiscriminate bombing, a kind of Russian roulette which is always unpredictable," Maronite Archbishop, Samir Nassar Nassar toldFides News Agency, after the attack.
"The survivors bury the dead without having been able to treat the wounded since they lack means and competence," he said.
"They sink into silent prayer before the relics of martyrs, the seeds of faith..."