Lightsaber Deflection

OFFICIAL ERRATA 

Should read: “Interrupt: When damage would be dealt...”

ASK FANTASY FLIGHT 

Q: If a unit that cannot be damaged is in an engagement as the only participating unit on its side (let's say it's a shielded unit with Preparation for Battle on table while the dial is 4 or lower) and the opponent strikes with a card that does unit damage, is the damage assigned and able to be Lightsaber Deflection'd before it fizzles or can it never be assigned in the first place?

A: The damage is never dealt in the first place, so it cannot be Lightsaber Deflected.

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Q: If a unit that is shielded receives 1 unit damage, can I play Lighsaber Deflection to redirect that damage?

A: The damage must be actually dealt in the first place before it can be Lightsaber Deflected. In this case a shield prevents damage from being dealt.