Or HaChaim on Exodus 12:32/אור החיים על שמות י״ב:ל״ב

1 וברכתם גם אותי, "bless me also." The past tense here is to be interpreted as a wish, i.e. "bless me too." Pharaoh meant that not only should the plague stop but that the result of Moses' blessing should be the process of the rehabilitation of Egypt.