If you have two Daru Spiritualists under your control and one is targeted (which should give it +0/+2 until end of turn), then it will instead get two triggers (so a total of +0/+4 until end of turn). The untargeted Daru Spiritualist, as expected, gets no triggers.
Maybe this is the expected behavior, but the wording doesn't suggest that, to me at least.
Maybe this is the expected behavior, but the wording doesn't suggest that, to me at least.