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This paper aims to analyze the generalization of Lema\^{\i}tre-Tolman-Bondi(LTB) spacetime for dissipative dust under the influence of Palatini $f(R)$gravity. We explore the modified field equations, kinematical variables, andmass function in this scenario. We construct Bianchi identities usingconservation and differential equations for shear, expansion, and curvaturescalar in the background of Palatini $f(R)$ gravity. We calculated the scalarfunctions coming from the orthogonal decomposition of the Riemann tensor inthis framework. These scalar functions known as structure scalars have beenexplored for LTB spacetime using modified field equations. The symmetricproperties of LTB spacetime have been discussed using two subcases. We foundthat generalized LTB spacetime has properties comparable with LTB and obtainedstructure scalars in both cases which have a similar dependence on a materialprofile even in Palatini gravity.

Study of Generalized Lema\^{\i}tre-Tolman-Bondi Spacetime in Palatini $f(R)$ Gravity