। ॥ ६१० ॥
In plain words
Existence, consciousness, bliss, and the rest of that list — these are what define the Self within. And 'real' means this: what cannot be cancelled in any of the three times, not past, not present, not future — because its own nature is eternal.
Close to the Sanskrit
Existence-ness, consciousness-ness, bliss-ness and the rest are the defining mark of the inward Self; unnegatability even in the three times is 'the real' — by reason of an eternal essential nature.