Dua to read if forgets to read dua before eating (breakfast or meal):

Arabic Text

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Pronunciation with Roman Arabic

Bismillaahi awwalaho wa aakhirah.

(The green 'a' means you have to pronounce this letter boldly. Here green 'a' is not used as a word but it is called al-Fath in Arabic language. All pink and green marked letters are used here as Arabic language signs which help in better pronunciation.)

Note: Roman pronunciation still has complications, as some letters and their pronunciations are not interchangeable with English letters, so you need to learn and concern from someone who has the correct knowledge.