Is the Creed a prayer? (Catholic mass)
The short answer is no.
While the creed is said at Mass, at the beginning of the rosary and on other occasions, it remains simply a code of Catholic beliefs.
I believe. A creed or code of beliefs; also applied to any one article of faith. (Etym. Latin credo, I believe.)
I found an excellent article showing the precursors of the Apostle's creed with translations in the original Greek, Latin, and English. It appears that the Pontius Pilate reference was unchanged, and the translation variations between "under Pontius Pilate" and "in the days of Pontius Pilate" don't change the meaning, which is simply to fix the historical ...
J.N.D. Kelly Early Christian Creeds,
“Of all existing creeds it is the only one for which
‘ecumenicity’...can be claimed.”
Kelly devotes 35 pages to this Creed, and though unfair to his work to cite such a snippet, he writes near end of the Chapter,
This creed seemed to...be the “faith of the Nicene Fathers”...dealing
with the heresies of the ...