Waht you need:
- Four candles - color is completely your choice.
Take your candles and set them out in a square around your ritual space, or the object you wish to confine. You may also align the candles accordingly to the cardinal points.
Now ignite the candles in an order you deem appropriate, for each candle, call upon a demon or a similar spirit to protect you from what you wish to summon. Either call upon any patron entities you may have, or use entities with appropriate directional associations. Another option is to call upon entities with associations that are the opposite to those of an entity you intend to summon. Example: Call on a lustful demon if you intend to summon an angel associated with chastity.
At the termination of your rite, extinguish the candles in reverse order, thanking the entities for their help. Other possibilities related to this method are placing the candles all along the sides of your square, or making use of the infamous Triangle of Choronzon.