The doctrine we discussed included Jesus and Lucifer as "brothers." Contrast this with the Christian Bible which describes Satan as merely a created being (an Angel) and Jesus as God on earth to redeem us from death and sin.
Scroll down to the second question on the page at the link below. Sorry, I'm not very good with hyperlinks.
http://www.lds.org/ldsorg/v/index.jsp?vgnextoid=2354fccf2b7db010VgnVCM1000004d82620aRCRD&locale=0&sourceId=4a10ef960417b010VgnVCM1000004d82620a____&hideNav=1