You'll need:
a black cat candle,
some black cat oil (patchouli and frankincense)
and a mirror.

On the night of the Waxing Moon, as close to midnight as possible, begin the spell. On your altar place the mirror reflective side up. As you dress the candle, visualize a barrier rising to block the psychic attacks and good luck coming to you.

Place the candle in the mirror light it and chant the following:  

"Black cat power,
from this hour,
reflect this light,
make it right."

Allow the candle to burn for one hour every night until the full moon. On the night of the full moon, place the candle in the moonlight.

Repeat the chant and allow the candle to burn out, throw any left over wax out and put the mirror away.