Samuel Lee offers a transcription of the Syriac Peshitta Pentateuch, including a translation of Genesis 4:15, describing the "mark" or "sign" of Cain.
Samuel Lee (Samuelem Lee), and William Emery Barnes (Guilelmus Emery Barnes), eds. Pentateuchus Syriace (Syriac Pentateuch, a Peshitta translation of the first five books of the Old Testament, called in Syriac: Ktava de-aurita : aukit amsha sefre de-Musha avda de-Alha aikh mapata peshita). Translated by Charles Wand Mitchell (Carolo W. Mitchell) and John Pinkerton (Iohanne Pinkerton) (London, England: Societatem Bibliophilorum Britannicam et Externam, 1914), 7
ܬܐ ܒܩܐܝܢ ܕܠܐ ܢܩܛܠܝܘܗܝ ܟܠ ܡ̇ܢ ܕܡܫܟܚ ܠܗ.
English translation (Bauscher): And LORD JEHOVAH laid a sign on Qayn, so that no one who finds him would kill him.