And when all these had come in vast array,
With Indra and the hosts of Brahma too,
Then too came Maras's hosts, and now observe
That Black One's Folly . Fro he said:
'Cone on, seize and bind them all! With lust
We'll catch them all! Surround them all about,
Let none escape, whoever he may be!'
Thus the war-lord urged his murky troops.
With his palm he struck the ground, and made
A horrid din, as when a storm-cloud bursts
With thunder, lightning and with heavy rain ---
And then --- shrank back, enraged but powerless!
And He-Who-Knows-by-Insight saw all this
And grasped its meaning. To his monks he said:
'The hosts of Mara come, monks --- pay good heed!'
They heard the Buddha's words, and stayed alert.
And Mara's hosts drew back from those on whom
Neither lust nor fear could gain a hold.
'Vicorious, transcending fear, they've won:
His followers rejoice with all the world!' 
Notes from Marice Welsh:
 Kanha: 'black' but not connected with the Kanha mentioned in DN 3.1.23.
[That Kanha was a mighty sage.]
 Rhys Davids says: 'We have followed the traditional interpretation in ascribing these last four lines to Mara. They may quite as well, or better, be a statement by the author himself.'
I have had the courage of his convictions, and made it so.