Forum:Is my Strategy Flawed?

I have a deck that can be considered an 'Instant Win' deck, but looking over my card's effects again I think it might not work like I intend. The cards in question are 'Self-Destruct Button' and 'Ring of Defense'

The plan was to allow my life points to lower until the difference in my life points and my opponents is 7000 or more, then activate the Self-Destruct Button along with the Ring of Defense, thus wiping out my opponents life points while leaving mine untouched, making it not a suicide bombing, but an Instant Win.

Now here's the problem: the 'Ring of Defense' effect reads- "Activate only when an effect of a Trap card that inflicts damage is activated. Make the effect damage of that Trap card 0." However, it does not specify if it is cancelling the damage entirely or just the damage being dealt to me.

I'm worried this wording means that if I use Ring of Defense in response to my own Self-Destruct Button, it won't only keep me from becoming damaged, but also negate the damage done to my opponent.

Does anyone know whether or not my opponent would be protected by my Ring of Defense?