  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, and
mass function in this scenario. We construct Bianchi identities using
conservation and differential equations for shear, expansion, and curvature
scalar in the background of Palatini $f(R)$ gravity. We calculated the scalar
functions coming from the orthogonal decomposition of the Riemann tensor in
this framework. These scalar functions known as structure scalars have been
explored for LTB spacetime using modified field equations. The symmetric
properties of LTB spacetime have been discussed using two subcases. We found
that generalized LTB spacetime has properties comparable with LTB and obtained
structure scalars in both cases which have a similar dependence on a material
profile even in Palatini gravity.

General Relativity and Quantum Cosmology