prthivi santirapah santirosadhayah santih .
vanaspatayah santirvisvedevah santirbrahma santih
sarvam santih santireva santih sa ma santiredhi ..
om santih santih santih
A Vedic Shanti Mantra (prayer for peace) from the Yajur Veda (specifically found in the Shukla Yajur Veda, Chapter 36, verse 17).
May peace radiate there in the whole sky as well as in the vast ethereal space everywhere. May peace reign all over this earth, in water and in all herbs, trees and creepers. May peace flow over the whole universe. May peace be in the supreme being Brahman. And may there always exist in all peace and peace alone. Aum peace, peace and peace to us and all beings!