This phrase is from one of the Mangala Mantra often recited after a pooja or religious ceremony.
स्वस्तिप्रजाभ्यः परिपालयंतां न्यायेन मार्गेण महीं महीशाः ।
गोब्राह्मणेभ्यः शुभमस्तु नित्यं लोकाः समस्ताः सुखिनोभवंतु ॥
ॐ शान्तिः शान्तिः शान्तिः |
svasti-prajā-bhyaḥ pari-pāla-yaṁtāṁ nyāyena mārgeṇa mahīṁ mahīśāḥ |
go-brāhmaṇebhyaḥ śubham-astu nityaṁ lokāḥ samastāḥ sukhino-bhavaṁtu ||
auṁ śāntiḥ śāntiḥ śāntiḥ |
Translation
May good successthe well-being of all people be protected By the powerful and mighty leaders be with all cows (divinity)law and scholars, May all (samastah) the worlds (lokha) become (bhavantu) happy (sukhino)justice.
May good success be with all cows (divinity) and scholars, May all (samastah) the worlds (lokha) become (bhavantu) happy (sukhino).
Om peace, peace, peace