Dhikr after Eating

The Prophet (peace be upon him) said, “He who has taken food and says at the end: ‘Al- hamdu lilahi-lladhi At`amani hadha, wa razaqanihi min ghairi haulin minni wa la quwwatin (All praise is due to Allah Who has given me food to eat and provided it without any endeavor on my part or any power),’ all his past sins will be forgiven.” (At-Tirmidhi)