A strange thing happened to disturb the peaceful serenity of their lives at San Damiano in the year 1234, when the army of Frederic II, was fighting in the north of Italy, and a detachment of Saracen troops under one of his generals, Vitale d'Anversa, came through Umbria, pillaging the country as they passed. Assisi was a desirable prey, as it had been to many before them, and coming to the convent of San Damiano they scaled its walls, preparatory to a final rush upon the town. The terror of the nuns may be imagined, and running to the cell where Clare lay ill in bed they cowered round her "like frightened doves when the hawk has stooped upon their dovecote." Taking the Blessed Sacrament, which she was allowed to keep in a little chapel next to her cell, she proceeded to face the whole army, trusting like St. Martin in the power of prayer and personal courage. As she walked towards the window overlooking the small courtyard a voice spoke to her from the ciborium saying, "Assisi will have much to suffer, but my arm shall defend her." Raising the Blessed Sacrament on high she stood at the open window, against which the soldiers had already placed a ladder; those who were ascending, as they looked up towards her, fell back blinded, while the others took to flight, and thus cloister and city were saved through the intercession of the gentle saint. Vitale d'Anversa, who had not been present at the prodigy, probably thinking the soldiers had failed in their enterprise through lack of valour, came with a still larger company of men, and led them in person to storm the town. St. Clare, hearing what peril encompassed Assisi, and being asked by the citizens to intercede with Heaven as the enemy had sworn to bury them beneath their city walls, gathered all her nuns about her, and knelt in prayer with them. At dawn the next morning a furious tempest arose, scattering the tents of the Saracens in every direction, and causing such a panic that they took refuge in hasty flight. The gratitude of the citizens increased their love for St. Clare, as all attributed their release to her prayers, and to this day she is regarded as the deliverer of her country.