According to Catholic Online, it is appropriate to say this prayer before a meal: "Bless us Oh Lord, and these thy gifts, which we are about to receive, from thy bounty, through Christ, Our Lord. Amen." Chabad.org suggests reciting this blessing before eating bread: "Blessed are You, Lord our God, King of the Universe, Who brings forth bread from the earth."
Prayers said before eating a meal vary among different religions and sects. Most agree that it's important to acknowledge that food is a blessing and to thank their higher power for the gift of the meal. The website WhatChristiansWantToKnow.com lists several suggested prayers to say before a meal, including a rhyming meal prayer for children: "Thank you for the world so sweet, Thank you for the food we eat, Thank you for the birds that sing, Thank you God for everything. Amen."
The Islamic website Islam.tc suggests the simple blessing, "With Allah's name and upon the blessings granted by Allah do we eat" as an appropriate prayer to say before mealtime. Buddhist author Thubten Chodron offers a series of before-meal contemplations on his website, ThubtenChodren.org. One example is, "I contemplate this food, treating it as wondrous medicine to nourish my body."