to feel as nothing (see Molina, who provides this in the first person)
Alonso de Molina:
anotlei. no soy nada. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 6r. col. 2. Thanks to Joe Campbell for providing the transcription.