Silsilah as-Sahihah 1855 — What should a fasting person say if

It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him), the Noble Prophet (peace and blessings be upon him) said: "When someone is invited to a meal, he should accept it. Then, if he is not fasting, he should eat, and if he is fasting, he should pray (for the host)."