From the Ra Contact: Guardians seemed to be used in three different ways, including in the top tier those entities from the next octave, in the middle tier those of this octave who watch over and facilitate harvest, and those of the lower tier who are our personal guardians. At the top level there are the Guardians who, as light-bringers, come from the octave above our own to aid our octave in its Logos completion, being given the highest of all honor/duties to supervise light in its manifestations during the experiential times of our cycles. Presumably on the middle level in the above schematic, there are the Guardians who back up the Council of Saturn, offering their services as requested; they set up the light quarantine which consists of the Guardians to guard the free will distortion of the mind/body/spirit complexes of third density on the Earth.
See also “Protection”
7.9, 9.6-9, 9.18, 12.3-5, 16.1, 16.5-6, 20.28, 21.8, 21.14, 24.4, 30.14, 48.8, 50.5, 51.1, 52.12, 54.10, 67.13, 95.22