<prompt> Most radio resistant phase in cell cycle:G1Early SLate SG2  <response>: Radiation energy is absorbed by tissue causing ionization or excitation, which are responsible for various biological effects. Susceptibility of various phases of cell cycle of radiation: G2MMG1 early S late S phase Phase of cell cycle Comment G2MG2 Most sensitive to radiation End of S phase Most resistant to radiation G1 Radiation exposure leads to chromosomal aberration G2 Radiation exposure leads to chromatid aberration 