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In this paper, we consider a decode-and-forward (DF) relay-assisted mixed free space optical-radio frequency (FSO-RF) system, where the FSO system utilizes simultaneous light-wave information and power transfer (SLIPT) to extend the lifetime of the system. Considering energy harvesting at DF relay node, we derive the statistics of end-to-end signal-to-noise ratio (SNR). For the considered system, the FSO channel is modeled by the Gamma-Gamma turbulence model affected by zero boresight pointing error, and the non-coherent intensity modulation with direct detection (IM/DD) technique is employed at the FSO receiver. Further, the RF channel is assumed to undergo Nakagami-m fading. In particular, analytical closed-form expression of outage probability is derived for the considered network in terms of Meijer's G-function. To obtain further insights, we derive asymptotic outage probability expression and …