Doomed at the Ford of Bruinen

"At that moment there came a roar and a rushing: a noise of loud waters rolling many stones. Dimly Frodo saw the river below him rise, and down along its course there came a plumed cavalry of waves. White flames seemed to Frodo to flicker on their crests and he half fancied that he saw amid the water white riders upon white horses with frothing manes. The three Riders that were still in the midst of the Ford were overwhelmed: they disappeared, buried suddenly under angry foam. Those that were behind drew back in dismay."
-- "Flight to the Ford" - Fellowship of the Ring - J.R.R. Tolkien

At the Ford of Bruinen, we are outnumbered, we are outgunned. One might say that Elrond and Gandalf, by their combined magic, save Frodo, or perhaps even Glorfindel's horse, Asfaloth. In the movie, it appears that a sword-raising Arwen is the hero.

But what comes before the rescue?

A fading, mortally wounded Frodo, least among us, turns back. Before the saving water begins to rise, before the "cavalry of waves" becomes a team of trampling water horses, drowning the enemies' steeds and carrying the Ringwraiths to ignominous (if temporary) defeat, he turns at the water's edge, drawn to the Nazgul. Before any sign of salvation, he defies the overwhelming agents of death, who already have him in their grip, already have him pierced with soul-eating enchantments - both the morgul blade in his shoulder and the deadly ring around his neck.

"'By Elbereth and Luthien the Fair,' said Frodo with a last effort, lifting his sword, 'you shall have neither the Ring nor me!'"

His eyes were like a flame of fire, his feet were like burnished bronze, refined in a furnace, and his voice was like the roar of many waters.