Garuda jumps after a fixed period of time. If you know she's going to jump soon, just move away from her and heel. There's really no reason for you or your egi to get hit by the feathers since both you and your egi (assuming you use Garuda-egi, which you should be) are ranged. Even if for any reason the egi get hits by one, just sustain immediately and it'll survive. If you let it get hit by 2 or more feathers, then it really is your fault.