Duel Between Minerva McGonagall, Horace Slughorn, Kingsley Shacklebolt and Tom Riddle

This brief duel took place during the second half of the Battle of Hogwarts; about the same time Bellatrix Lestrange was killed. Order of the Phoenix members Minerva McGonagall and Kingsley Shacklebolt, along with Hogwarts Professor Horace Slughorn fought off the Dark Lord himself, Tom Riddle. When Tom saw that Bellatrix had been killed by Molly Weasley, he blasted all three of his opponents simultaneously. That was when Harry Potter cast a charm to protect Molly, revealing himself in the process.

Background
This duel took place about 50 feet away from the killing of Bellatrix Lestrange. (see page)

Duel
This duel was a very brief one. Obviously, Voldemort sent Killing Curse for McGonagall, Shacklebolt, and Slughorn to dodge, whilst the three of them tried to incapitate the Dark Lord. When Tom saw that Bellatrix had been killed, he blasted the three of them back, possibly with a Blasting Curse.

Aftermath
When Tom raised his wand on Molly, Harry revealed himself to be alive by casting a Shield Charm between Voldemort and Molly. Then, Tom and Harry duelled only to kill Voldemort, ending the Battle of Hogwarts and the Second Wizarding War.

Behind the Scenes

 * This duel was not in Harry Potter and the Deathly Hallows: Part 2

Appearances

 * Harry Potter and the Deathly Hallows (briefly)