iyelitzin in dios.

(a loanword from Spanish)

Headword: 
iyelitzin in dios.
Principal English Translation: 

the being or the essence of God (see Molina)
(partly a loanword from Spanish, dios, God)

Alonso de Molina: 

iyelitzin in dios. el ser o la essencia de dios.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 36v. col. 2. Thanks to Joe Campbell for providing the transcription.