Sure, this is from the 29th edition of the column, back in the DC Universe days:
wrightline1.42741 asks:
“Thanks to the Lazarus Pit, Ra’s al Ghul has lived an enormously long life, so far. And it’s only been a few short years (in DC Comics time) that he has run up against Super Hero opposition to his global plans for humanity. But, since even prior to Batman, he has failed to accomplish his goal. One has to wonder, why? What other heroes (or villains) in times past have stood in his way?”
Not too many. But those who have stood against the League of Assassins have generally been equally clandestine organizations, waging a shadow war against the Demon’s Head for centuries.
Early issues of Azrael suggest that Jean-Paul Valley’s own Order of St. Dumas may have been one such organization. Similarly, the Rebirth era introduced us to the existence a splinter counter-faction from within the League of Assassins, known as the League of Shadows… once led by Lady Shiva, the world’s deadliest assassin, but currently headed up by the Demon’s own daughter, Talia. Ra’s has also been long embroiled in a bitter struggle for dominance with the enigmatic “Sensei” — a figure who may either be Ra’s al Ghul’s father, or his own son, depending on the legend.
Another opposing faction to the League of Assassins is the mysterious All-Caste, an ancient order of mystic warriors who trained Jason Todd in the New 52 after his resurrection.
Robin: Son of Batman introduces us to the Lu’un Darga, an ancient family of immortals who seek to keep the likes of Ra’s al Ghul from exploiting Earth’s Lazarus Pits — but also to cleanse the world of all life and start over. Luckily, Damian was able to deal with them.
One of Ra’s al Ghul’s most recurring enemies in ancient times may have been I-Ching, the martial arts master who took upon the heavy burden of embodying both the light and dark essences of the universe. In his ongoing struggle against corrupting influences such as Ra’s, I-Ching has trained Batman, Wonder Woman, and China’s own New Super-Man.
Maybe the most enlightening encounter with the pre-Batman history of Ra’s occurred in 2009’s Justice League of America 80-Page Giant #1. One of many time-bending stories in that anthology is set in the early 20th century, where the S.H.A.D.E. organization has dispatched their agent The Bride (as in, of Frankenstein) to keep Ra’s from exploiting another Lazarus Pit. Most surprisingly, it’s revealed through the course of that adventure that The Bride was once married to Ra’s al Ghul, as well.
In media outside of comics, Ra’s has had his fair share of enemies before Batman as well. The Batman: The Animated Series episode “Showdown” relates the 19th century tale of an aging Jonah Hex opposing Ra’s al Ghul in his own right. And in the Arrowverse series, we find Ra’s has long struggled for control against his ally turned rival Damien Darhk, and enlists Oliver Queen to aid in defeating him.
But here’s a thought for you. Despite all of that, before Batman appeared to oppose him… what makes you believe Ra’s al Ghul was ever truly stopped?