circle of protection

Opening the circle
 
Purify the place where you will cast your circle. Purify physically (clean up) as well as spiritually (take your hands, or broom, athame or wand and direct positive energy into the area, to push away negative energy). You could try using witch hazel or even a smudge stick-which is sage dried and tightly bound into a stick form-  to cleanse the area - a couple of drops in each corner of the room and round the perimeter of the circle should be sufficient.

Physically determine the bounds of your circle, if you want. Do this by drawing a circle on the floor, sprinkling salt water in a circle, or by laying a cord in a circle (make sure you tie it). Anyhow, the circle is usually as wide as you are tall. unless you are doing a rite with many people them your circle should be wide enough for every one to fit inside it.

Place all the objects you will be using in your ritual inside the circle

Represent the elements in the four quarters of your circle (called corners by some, but a circle doesn't have any corners!). Place something that represent Earth in the north(crystal, salt, twig,dirt etc.) Air in the east(feather, incense, oil etc) Fire south(candle) and Water west(tap will work the gods aren't picky) Bless (or ask for consecration of) these things. Be sure to have some food(bread, cake, cookies etc) and drink(water, wine, mead, juice, etc) to share with the spirits, to thank them and to replenish your energy.

(This is where you may (if your confident enough) make changes, as long as the same thing is being accomplished)

Take your magick weapon, whether it be hands, a broom, athame or wand, and walk round the spot where your circle will be thrice, clockwise: "Cast the circle thrice about, to keep the evil spirits out." State the purpose of the circle.

Invoke the elements and spirits and deities you wish to work with. Call them to the objects that represent them. Take each of the objects that represent the elements around your circle, filling it with the power of each of them.

Meditate for a while now. Meditation or astral projection might be the main act, or it serves just to shift your consciousness.

Do whatever it is you want to do in your circle. Remember: "An it harm none, do what ye will." If you must leave the circle before you are done, cut a doorway (quite literally, envision a doorway being cut from the edge of the circle, up, to the side, then down again. Re-close the circle once you're back in.


http://www.wikihow.com/Cast-a-Circle


  Closing the circle

Walk counter-clockwise around your circle three times. On the first turn, verbally thank the four directions as you pass their stations. On the second turn, verbally thank your guardians and angels for their protection and guidance. On the third and final turn, say:

"O circle of power,
By my will, I release thee.
Thank you for your guidance.
Return to your place of power.
my will so Mote It Be!" 

Clap hands loudly, or ring the bells to disperse the energy. This action is like bursting a bubble or taking a broad expanse of energy and scattering it into a million parts to go out to the earth and be transformed into your desire. With a broom or your hand, erase the circumference of your circle.
http://www.spellsthatwork.com/circle-closing.html