Reading Rebuke, it would seem it only works against powers that target you directly (Force Lightning, Force Grip) and not AOE powers (Force Storm, Hatred). ¿So if you use a Force Technique/Secret/feat/talent that changes the target to an AOE like Improved Mind Trick would this get make it immune to Rebuke?
Earlier in this thread I asked if you use Redirect Shot to send an attack back at an attacker would any properties added by the attacker be applied to the redirected attack and the answer was no. ¿Does this also apply to Rebuke?
For the first point I think you may see some house rules/interpretations that would allow you to Rebuke (Negate) the part of an AoE Power that is "targeting" you even if you couldn't stop the whole thing. I probably wouldn't allow that sliver of an AoE to be sent back. AoE can be a tricky thing when determining targeting.
As for the second part you might want to find the errata:
p. 100 – Rebuke
Change the end of the second paragraph to say, “…who suffers the effect based on the creator’s original Use the Force check.”
This would make me think that it turns the power in full.