I'm no expert, but it is highly improbable that a quasar would directly confront us. The gyro effect of the black hole keeps the gas stream pretty tight in a cone like line.
They possess a tremendous amount of concentrated energy made up of X rays,ultraviolet rays, and others I can't quite remember, so if one was to strike us it would be a bad deal. Considering the nearest one is about 600 million light years away and their energy cone can only travel about 1 to 2 million light years we are safe. It takes a massive black hole to produce one.I'd say these pose no threat at this time Nika. Peace