a blinding burst of light tore away the dark

Letting his breath go, Rand took a quick look after the man, then pulled back into the shadows. A few people still stood at the windows. "We can't expect any more luck tonight," he whispered. The thought of saidin decided him. Too many strange things had happened when he let the male half of the True Source come close. "I will follow as soon as I can. Go." He turned to peer around the wall at the Trollocs.
From the corner of his eye, he had an impression of Loial's bulk moving, of Selene's white dress, half covered by his cloak. One of the Trollocs beyond the tubes pointed to them excitedly, but still the three hesitated, glancing up at the window where the woman still watched. Three of them. There has to be a way. Not the void. Not saidin.
"There is a door!" came Loial's soft call. One of the Trollocs took a step out of the shadows, and the others followed, gathering themselves. As from a distance, Rand heard the woman at the window cry out, and Loial shouted something.
Without thinking, Rand was on his feet. He had to stop the Trollocs somehow, or they would run him down, and Loial and Selene. He snatched one of the smoldering sticks and hurled himself at the nearest tube. It tilted, started to fall over, and he caught the square wooden base; the tube pointed straight at the Trollocs. They slowed uncertainly - the woman at the window screamed - and Rand touched the smoking end of the stick to the fuse right where it joined the tube.
The hollow thump came immediately, and the thick wooden base slammed against him, knocking him down. A roar like a thunderclap broke the night and a blinding burst of light tore away the dark.
Blinking, Rand staggered his feet, coughing in thick, acrid smoke, ears ringing. He stared in amazement. Half the tubes and all of the racks lay on their sides, and one corner of the building beside which the Trollocs had stood was simply gone, flames licking at ends of planks and rafters. Of the Trollocs there was no sign.
Through the ringing in his ears, Rand heard shouts from the Illuminators in the building. He broke into a tottering run, lumbered into the alley. Halfway down it he stumbled over something and realized it was his cloak. He snatched it up without pausing. Behind him, the cries of the Illuminators filled the night.
Loial was bouncing impatiently on his feet beside the open door. And he was alone.