I can't. there is no proof of the Resurrection
I have seen this before, people comparing lack of evidence for global flood, with the resurrection of Jesus and how we can not prove it through science.
Yes like a Global Flood, Jesus's death can not be proven by science, and they both do not leave scientific evidence to support it.
However.
Jesus's death also has less of an impact on the physical world (clearly his death had a strong impact, but not in the same sense of a global flood). His death does not claim to.....
Also cover the entire earth in water to the highest mountains.
Wipe out all human life/civilizations, on all continents on the earth except 1 family.
Wipe out all land based animal life except some in a boat (a number which is to small to explain the millions and millions of species we have to day).
If all 3 of those things happened, the earth and the state of humanity (likely would die out) and civilization (all wiped out), extinction of so many animal species (including the surviving animals who would have it tough, specially the meat eaters in a post flooded world), the destruction of so much trees/plant life, would make the world look far different then what it is today.
The point im trying to say is that a Global Flood would leave massive amounts evidence that affected the natural/physical world (and humanity/history), unlike the death of Jesus.