Halakhah su Geremia 50:78

When you see graves of Jews, you should say: Baruch ata Adonoy Elokeinu melech ha'olam asheryatzar eschem badin … [Blessed are You, Hashem, King of the universe, Who has formed you in judgment etc.] When you see the graves of pagans, you say: [the verse in Jeremiah 50:12] "Your mother will be deeply ashamed, she that gave birth to you will be disgraced. Behold, the ultimate end of nations will be a desert, a dry land, and a wilderness."