I added to this post when I re-posted it so I thought I’d put it here too.
Some celebrate the Mysteries of Wesir during this time. Here is Devo’s ritual to observe this holiday: Osirian Mysteries: A Ritual
Here is a series of posts about the holiday by Rev. Tamara Siuda, Egyptologist, author and spiritual leader:
God is Dead: Thoughts About the Mysteries of Wesir (Osiris)
Advance with Your Ka: Mystery Vigil
Stirring in the Third Hour: Mysteries of Wesir
Water for the Dead: Mysteries of Wesir
Mysteries of Wesir: Fifth Hour Vigil
Dua Wesir! Nekhtet!
Here is a copy of the Lamentations of Aset and Nebet Het which can be recited during this festival. Lamentations of Aset and Nebet Het.
The Lamentations are also available in The Ancient Egyptian Prayerbook by Tamara Siuda. The book is available in E-Book Paperback and Hardcover formats: E-Book: The Ancient Egyptian Prayerbook
Paperback: The Ancient Egyptian Prayerbook
Hardcover: The Ancient Egyptian Prayerbook