What exactly is shenu?

[ss2222]

Infinitely powerful is the Shenu around you,
Bright like the Power of a thousand burning Suns.

 

[Sonne]

"The Symbol that Encapsulates the Sigil: The Shen Ring, Egyptian Hieroglyphic language. The Shen also survived in Chinese tradition as a glyph for Spiritual Force, Divine Force, and God."

 

[Hs666]

...

Shenu is a "Divine Symbol of Protection." It can be seen in the Power Rituals of the Gods.