Stand outside the envisioned area to be protected and imagine a square around it. Begin in the front left corner; youll be designating the corners as black-white-black-white. Call the first corner black and allow the polarity of blackness to be there. With strong intention, start some energy at that corner in order to ward off anything unwanted. Turn towards the next white corner and move your intention and protective energy here. Complete the third and fourth corners all the way back to the starting point. Two corners opposite each other will be black and two will be white; this will foster a dynamic tension between them. You have set a parameter and called in the balance of light and dark to work for you. Complete safety requires three-dimensional protection and this necessitates moving into the spheres of Above and Below. Envision the protected area extending down into the earth and up into the sky.
Seems like some kind of "druid" warding. This doesn't really appear very "druid". It is more ecclectic, I once read something similar in mindlight by silver ravenwolf. Also much is not known about the protodruids. Neo druidry is recreation based on folklore, stories, accounts from pliny the elder, general recreation from neighboring cultures. There isn't anything really here that can be called " druid".