الْحَمْـدُ للهِ الَّذي أَطْعَمَنـي هـذا وَرَزَقَنـيهِ مِنْ غَـيْرِ حَوْلٍ مِنِّي وَلا قُوَّة
Alhamdu lillaahil-lathee at amanee haathaa, wa razaqaneehi, min ghayri hawlin minnee wa laa quwwatin.
Praise is to Allah Who has given me this food and sustained me with it though I was unable to do it and powerless.
Reference: At-Tirmithi, Abu Dawud, and Ibn Majah. See also Al-Albani, Sahih At-Tirmithi 3/159.