At the interrogation before Numerius Saint Isidore without flinching confessed his faith in Christ the Saviour and refused to offer sacrifice to idols. Numerius urged the saint not to expose himself to tortures and to obey the will of the emperor, but Saint Isidore answered, that he would obey only the will of the eternal God, Christ the Saviour, and never would he renounce Him. The saint was handed over to torture. During the time of torments he praised Christ God and denounced the pagan idols.
After execution his body was cast out without burial, but another saint, the secret Christian Ammonios, took up his body and committed it to earth [along with St. Myrope; see below]. Later on Ammonios himself accepted a martyr's death in the city of Kyzikos (Comm. 4th of September)." (taken from: http://www.stlukeorthodox.com/html/saints/may/14th.cfm)
And finally, there is a very touching local tradition that in the place where St. Isidore was martyred, the mastic trees shed fragrant tears at the suffering of the Holy Martyr of Christ. The tradition holds that the mastic, which is a major product of the island of Chios, can only be gathered and prepared from the trees in the area of the Saint's martyrdom. Thus the masticha, or mastic, is a divine gift, and a blessing to the people of Chios (taken and translated from: http://www.matia.gr/7/72/7203/7203_2_21.html)
Apolytikion in the Fourth Tone (amateur translation)
As a soldier of the eternal King who abandoned the earthly army, and bravely preached Christ God. Therefore as you completed your struggle well, O Martyr, you were glorified by God the Savior, Whom you entreat that we who honor you may be saved, O all-blessed Isidore.
Apolytikion (for a male Martyr) in the Fourth Tone
Thy Martyr, O Lord, in his courageous contest for Thee received the prize of the crowns of incorruption and life from Thee, our immortal God. For since he possessed Thy strength, he cast down the tyrants and wholly destroyed the demons' strengthless presumption. O Christ God, by his prayers, save our souls, since Thou art merciful.
In thy holy prayers to God, thou hast shone brightly, a great guide for all the world. Wherefore, we praise thee on this day, O Saint, thou Martyr of godly mind and boast of Chios, O glorious Isidore.
Apolytikion in the First Tone (amateur translation)
O great martyr Myrope, and spotless Bride of Christ, you now stand beside Him with beauty and comeliness. As radiant and shining stones you bear your body's wounds, and the porphyry of your blood as a royal robe, O glorious one. Entreat Him on behalf of us who praise your divine Struggle with fervor in victorious hymns and odes.
O Lord Jesus, unto Thee Thy lamb doth cry with a great voice: O my Bridegroom, Thee I love; and seeking Thee, I now contest, and with Thy baptism am crucified and buried. I suffer for Thy sake, that I may reign with Thee; for Thy sake I die, that I may live in Thee: accept me offered out of longing to Thee as a spotless sacrifice. Lord, save our souls through her intercessions, since Thou art great in mercy.
Truly the Lord is risen!