There's the obvious good vs evil theme going on. Beyond that, you have an outward struggle of dark vs light however, the roles are reversed. The priest is dressed in black and the demon wears white. I suppose the argument could be made that there is simply more than meets the eye. The sunlight was used to destroy her at the end through the priest's persistence. I think there's also a "It's always darkest before dawn" thing going on too.
I have a feeling though the scene would make more sense if I saw the entire movie.
I found the symbolism really interesting to analyze:
The book/bible didn't seem to have enough of an effect as a deterrent. And so it burned. But then the priest took the cross with Jesus on it. (So, the formalistic old testament versus the saviour from the new testament?)
And apparently there was some sort of supernatural struggle there, because the female statue -- Virgin Mary -- sheds a tear (of blood). I really want to know what that means. My guess is that the priest sinned somehow in the movie to bring about this plight to himself, and Jesus takes on another sin on behalf of a human being who is being faithful?
Note: I'm not religious, but it's a Russian movie with Christian symbolism.
And from IMDB The Power of Fear (2006) - IMDb it looks like Vedma is also known as The power of fear (2006). It currently scores 3.5 / 10 - a very low score. In my experience IMDB ratings are a pretty good guideline.
"What is the meaning of this clip?"
As @ibage says - hard to say really without seeing whole of the film. But we have standard horror film features: good versus evil, creepy music, dark & light, candles, fire, levitation, an anxious looking priest ("will his faith hold?"), a Bible, crucifixes.