When it is said
It belongs to no church service. Anyone can pray it for the peace of the world, at home or whenever the news is full of war.
Where it comes from
Author known
Who was St Silouan?
Silouan was born in 1866 to a Russian peasant family. In the autumn of 1892 he came to Mount Athos and entered the Russian monastery of St Panteleimon, where he lived as a monk until he died in 1938. The Church of Constantinople declared him a saint in 1987.
Where the prayer comes from
Silouan wrote down his prayers and thoughts himself. The senior monk Archimandrite Sophrony printed them in his book about Silouan. Sophrony said the writings of this almost unlettered man often read like the psalms, because they grew out of constant prayer. These two prayers come one after the other in that book, and a Russian collection of prayers by Russian saints prints them the same way.
Archimandrite Sophrony, Starets Siluan Afonsky, part two: “Longing for God”
Why “no enemies”
Sophrony wrote that the main witness of Silouan’s whole life was that no one can know God without loving their enemies. In the same pages Silouan prays again and again that all the peoples of the earth may come to know God.
In Russian
Дай, Господи, всем народам Твоим разуметь любовь Твою и сладость Духа Святаго,
да забудут люди горе земли,
и да оставят все плохое и прилепятся к Тебе любовью,
и да будут жить в мире, творя волю Твою во славу Твою.
О Господи, сподоби нас дара Духа Святаго,
да разумеем славу Твою и будем жить на земле в мире и любви,
да не будет ни злобы, ни войн, ни врагов,
но одна любовь да царствует,
и не нужны будут ни армии, ни тюрьмы,
и легко будет жить всем на земле.
From “Rare prayers of the great Russian saints”, in the Russian prayer book on azbyka.ru.