Yes, of course we have. Here are some of them:

Charles Dickens had said the following about Imam Husain (AS):

"If Husain fought to quench his worldly desires, then I do not understand why his sisters, wives and children accompanied him. It stands to reason therefore that he sacrificed purely for Islam."

Thomas Carlyle has relayed this about the Tragedy of Karbala:

"The best lesson which we get from the tragedy of Karbala is that Husain and his companions were the rigid believers of God. They illustrated that numerical superiority does not count when it comes to truth and falsehood. The victory of Husain despite his minority marvels me!"

The famous, Dr. K. Sheldrake on Imam Husain (AS) said this:

"Husain marched with his little company not to glory, not to power or wealth, but to a supreme sacrifice and every member of that gallant band, male and female, knew that the foes were implacable, were not only ready to fight but to kill. Denied even water for the children, they remained parched under a burning sun, amid scorching sands yet no one faltered for a moment and bravely faced the greatest odds without flinching."