There are at least 6 bands with this name:
These are photos from concerts where Necronomicon played, so they may be of other bands that played the concert as well.
Necronomicon / 3000AD / Strident / Killermia Sep 28, 2022 Budapest, Budapest, Hungary Uploaded by Roland Karsai
Belphegor / Suffocation / Necronomicon / Abiotic Nov 7, 2019 Portland, Oregon, United States Uploaded by Rottenbot
Septic Flesh / Fleshgod Apocalypse / Necronomicon / The Exiled Martyr / Hour Of Penance Jul 10, 2014 Phoenix, Arizona, United States Uploaded by Trevor Ronde
Behemoth / Necronomicon / Wetwork / Blood of Christ Nov 25, 2005 Oshawa, Ontario, Canada Uploaded by Ryan Hopkins