http://names.neolove.ru/female/20/29104.htmlhttp://xn----7sbahclhl7avt7bt8cyd.xn--p1ai/dagestanskie-imena.htm
(The latter URL looks weird because the first bit of the URL is in Cyrillic, it's not a dodgy site; at least my antivirus doesn't seem to have any issues with it so I'm pretty sure it's safe.)
I found a few sites that claim it is a contraction of Faiza, although Faiza itself seems to be used as well, so I'm not entirely sure on that.