Albert Barnes Commentary Ezekiel 9:8

"And it came to pass, while they were smiting, and I was left, that I fell upon my face, and cried, and said, Ah Lord Jehovah! wilt thou destroy all the residue of Israel in thy pouring out of thy wrath upon Jerusalem?" — Ezekiel 9:8 (ASV)

Left - The prophet was left alone; all who had been around him were slain.