Is the phrase "All deeds are between acceptance and rejection except for prayers upon the Prophet Muhammad" recited in celebrations?

There is no Shar'i (Islamic legal) evidence to prove what was mentioned in the question. What is known from the evidence is that deeds are not accepted except with two conditions: sincerity to Allah and adherence to the Sunnah (definition) of the Prophet, peace and blessings be upon him. This is based on his saying, peace and blessings be upon him: "Indeed, Allah does not accept any deed except that which is done purely for Him and by which His Face is sought," and his saying: "Whoever performs a deed that is not in accordance with our matter, it will be rejected." These two conditions encompass all deeds, including sending blessings upon the Messenger, peace and blessings be upon him.