Inspired from Judgement Arcana. The word in middle is read as "Sanctus" which means "Holy". The four symbols in the aligments are Earth (Eretz), Moon (Yaraech), Sun (Shamash), and Star (Kowkab). The presence of these significators symbolize the mastery of four celestial bodies of a single entity represented in this Cross, the Sanctus, the Holiness, the Judgement.
There are three other names of Sanctus: Qadosh, Agios, and Ouaab.
Encircling Sanctus are the name of spheres in Kabbalah, symbolizes the mastery over divine powers.
Beneath the the cross is letter Shin, which is 21st letter of Hebrew alphabet, and corresponds to Judgement Arcana.