The Shanti Mantras are prayers for peace, in the Hinduism. Shanti Mantras are also known as "Peace Mantras". Shanti Mantras form the part of Upanishads. These mantras are believed to cool the mind of reciter and the surroundings. Reciting these mantras at the beginning of
"Om Poornamadah Poornamidam Poornat Poornamudachyate,
Meaning: The literal meaning of this mantra is: "That is Absolute, This is Absolute, Absolute arises out of Absolute, If Absolute is taken away from Absolute, Absolute remains OM Peace, Peace, and Peace"
"Om Asato Maa Sadgamaya,
Meaning: The accurate sense of this mantra is: "OM lead me from unreal to real, lead me from darkness to light, lead me from death to immortality Om Peace, Peace, Peace, Peace.
From Taittiriya Upanishad, Katha Upanishad and Shvetashvatara Upanishad:
"Om Sahanaa Vavatu Sahanau Bhunaktu
Meaning: The literal meaning of this mantra is: "OM. Let all of us protect each other together, may all of us enjoy together, may all of us work
"Om Bhadram Karnebhih Shrunuyaama Devaah
Meaning: The literal meaning of this mantra is: "OM. O Gods! Let us hear promising things from our ears. O respectful Gods! Let us see propitious things from our eyes, let our organs and body be stable, healthy and strong. Let us do what is pleasing to gods in the life span allotted to us. May Indra, inscribed in the scriptures do well to us, May Pushan who is knower of world do good to us and May Trakshya who devastates enemies do good to us! May Brihaspati do well to us! OM Peace, Peace, Peace".