A large amplitude X-mode laser, propagating perpendicular to the static magnetic field B s || z ˆ , through a clustered plasma parametrically couples to upper hybrid wave and a lower hybrid wave. Coupling occurs due to ponderomotive force by the high frequency upper hybrid waves and low frequency density perturbation beating with the oscillatory velocity due to X-mode laser. The cluster Plasmon resonance strongly modifies the nonlinear coupling between upper hybrid and lower hybrid waves. Fluid theory is employed to obtain the response of plasma electrons and cluster electrons to upper hybrid and lower hybrid mode. For typical parameters, eA 0 / m ω cc = 0.2,0.3, k 0 x = 2ω c / c , k 1⊥ ≈ 0.8ω0 / c , ω0 = 2ω c , ω2 pe /ω2 p =10, ω c / ω p =1, k 1 z / k 1 =.16 , (4π/3) r c 3 n c = 0.001, the growth rate is maximum when ω 1 /ω UH = 0.35 .