Easy - Mat 8:6, and Mat 15:25 for a couple of recorded instances.
There are enough definitions of the English word "prayer," including definition No. 5 Oxford English Dictionary (a thing that you hope for very much) to make the issue of whether Mat 8:6, 15:25 constitute "prayer" in the English sense irrelevant.
Given that Jesus was regarded as a "god" in the English sense, further senses of the word prayer are envisaged.
I suppose I was thinking of the highest form of prayer, i.e. the
Luk 18:11,
Luk 18:13 senses, where the prayers to God commenced with the Ὁ θεός form of address.