Dua When Sacrificing an Animal

بِسْمِ اللهِ واللهُ أَكْبَرُ اللَّهُمَّ مِنْكَ ولَكَ اللَّهُمَّ تَقَبَّلْ مِنِّي

Bismillaahi wallaahu 'Akbar [Allaahumma minka wa laka] Allaahumma taqabbal minnee

Pronunciation: With the Name of Allah, Allah is the Most Great! [O Allah, from You and to You.] O Allah, accept it from me.

Reference: Muslim 3:1557