Longitudinally pumped Ni-like Mo x-ray laser media is modeled using EHYBRID and a post-processor code. The required atomic data are obtained using the Cowan code. In this study the pre-formed plasma is pumped on longitudinal direction with a grazing angle. Variation of the x-ray laser gain of the 18.9 nm and 18.2 nm Ni-like Mo lines according to the incidence angle of the main heating pulse normal to the target surface is calculated for different main pulse energies. X-ray resonance lines between 26 and 37 angstrom emitted from molybdenum plasma have been simulated using post-processor coupled with EHYBRID.