A Pagan Perspective
There is an excellent book on the market - When Someone You Love Is Wiccan by Carl McColman. It answers most of commonly asked questions and lays to rest an number of the mis-comprehensions and erroneous ideas about Wicca. Wicca is a legitimate choice of a spiritual path and the answers below could benefit from reading the book.
One Person's View
You show them and help them understand the light side of life. If they are willing to rid the evil in themselves it's their journey to take, you cannot force it upon them but you can guide them to the other side safely.
You could ask her/him to leave. (Doesn't require magick)
"Rid" is a verb.Let's rid the world of evil!
Rid the world of evil.
to get rid of it
Purify it by doing it.
The best way is to not invest in the evil spell. An "evil spell" only has the power which you give to it. If you choose to "walk away" from belief in the power of spells, you will be free of their power.
To get rid of evil spirit's.
With an exorcism
Rid him of the evil that has attacked his people and his hall.
There is no such concept within the Torah.
YOU COLD-HEATED EVIL PERSON! you gon on to the chao transporter holding a chao and click "goodbye" HE/SHE WILL BE SENT INTO A COLD DARK FOREST AND HE/SHE SHALL BE GONE FOREVER! SERIOUSLY PEOPLE YOU COLD HEARTLESS EVIL DEVIL!YOUR SICK!YOU DISCUST ME!
get rid of the person that gives you them