Hyperpoke whatever it is

You charge up your finger and prepare to preform a mighty HyperPoke. With speed unlike anything on earth you jab your finger deep into what you assume is the creature's abdomen. The creature glows bright white for a moment, but then its spell resistance kicks in and the creature blasts the HyperPoke energy back at you!

you barely have time to block the attack, but since you're used to HyperPoke energy you take minimal damage. Now what?