The present paper attempts to introduce the notion of generalized weakly $% \phi $-symmetric and generalized weakly Ricci $\phi $-symmetric Lorentzian Para Sasakian manifold. Furthermore, we study generalized weakly $% \phi $-symmetric Lorentzian Para-Sasakian spacetimes. In addition, the existence of a generalized weakly $\phi $-symmetric Lorentzian Para Sasakian manifold is ensured by a suitable example.