Stand facing East and repeat to yourself while visualizing the actions -- "I experience myself surrounded by an egg-shaped aura of blue light, with a column of light extending from the center of the earth up through my body to the top of the sky. A crown of light is shining brightly overhead and light from this crown is streaming down into my aura, brightening, vivifying and cleansing it. I remain surrounded by a sphere of incandescent blue light, a two-sided mirror reflecting my aura, strengthening and compressing it tightly around my body and reflecting away any and all negativity and psychic attacks back to their sources." Count 32 breaths (a mystic number for reasons I won't get into) while performing this visualization.
My aura is blue, at any rate. Yours might be a different color. (Determine this with a visualization exercise and substitute your aura color in the above formula.) This should give each of you a measure of personal protection anyway.