Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
rescind [rɪˈsɪnd] vt (law, judgement) отменя́ть (отмени́ть*perf) (contract, order etc) аннули́ровать (impf/perf)
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.