Abyssal Embrace

Symbolism, particularly the colors, play an important role here. The Black Cloth being a representation of the Abyss, the empty expanse beyond reality. The Gray Bowl being the world itself, caught between empty and the infinite. The White Candles being the font of infinite energy known to practitioners as magic or magick, each representing a pillar of the world alongside the caster themself. The Clear Crystal being the representation of the caster specifically. The Water represents the surroundings of the caster, clear as they themself but also less solid, mixing more easily with the world around it.

For this ritual, spread a Black Cloth across a solid surface. Set the Gray Bowl atop, roughly in the center of the cloth. The White Candles go at three corners, with the caster occupying the fourth. Fill the bowl with Water and light the Candles. Place the Crystal near the corner nearest the caster first, repeat over it, "Invoco Nihilus" four times. Then, move clockwise or counter-clockwise in the direction of your dominant hand to the next corner. Repeat the incantation again, one less time at each corner.

After moving the crystal to each corner in turn submerge it within the water of the bowl. Meditate, focus upon emptying yourself and pushing the sense of calm emptiness into the crystal representation of yourself. Once you feel satisfied, extinguish each candle, moving in the opposite direction as you did the crystal before, within the Bowl. After all three candles are dark, turn the Bowl over, pouring the water and crystal onto the Black cloth. Wrap the wet cloth tightly around the crystal and store it some place safe.

The representation of the emptiness, paired with the intent poured into the ritual earlier, will call a bit of the metaphysical nothingness to you, providing a consuming shroud that will obscure you from unwanted workings.

This protection will not last forever, but it will hold for a while before reality reasserts that Nothing should not exist. The ritual may be repeated with the same crystal to greater effect.