This was posted by Jen at Chasing Domestic Bliss for the Pagan Blog Project. I thought it was beautiful so I'm reposting it.
As the sun rises in the east we call the properties of air to form the circle Fly to us on Raven wings
As the sun warms the south we call the properties of fire to form the circle Travel to us on a sun ray, warm us as you warm the snake
As the sun sets in the west we call the properties of water to form the circle Swim to us with the noble turtle
As the sun sometimes never sets in the north we call the properties of earth to form the circle Run to us beside the majestic polar bear
As our center shines with our internal sun we call the properties of spirit to form the circle Bind us together with the grace of nature's energy
the circle is cast, we are between the worlds, blessed be