This is an excerpt from the estimable Abbe Dom Prosper Gueranger (The Liturgical Year, Saturday of Passion Week, Evening Vespers)

referring to Satan:

"The Cross, which he had so exultingly prepared for the Just One, has been his overthrow; or, as St. Anthony so forcibly expresses it, it is the bait thrown out to the leviathan, which he took, and taking it, was conquered."

I'm trying to find the source for the underlined reference.  To date, my efforts are woefully unsuccessful; thus, I go to the experts on this forum.

Thank you, Songbird.  I also presume the reference to be St. Anthony of Padua vs. Desert, although I've been investigating all options.  
So far, I'm failing miserably to find the source that the good Abbe referenced.  

It's a long story why this is so important to someone very near and dear to me, but it is.  I trust the Holy Ghost will provide the answer.

'He humbled himself, becoming obedient unto death, even to the death of the cross. [Phil 2.8] St Augustine (2) says: "Our Redeemer spread before our captor the mouse-trap of the cross; he placed his own blood as bait. The devil shed the blood of one who was not a debtor, and by doing so retreated from those who were debtors." St Bernard (3) says of Christ: "So great was  is obedience, that he was ready to lose life itself; being made obedient to the Father even to  eath, death on the cross." He had nowhere to lay his head [cf. Mt 8.20; Lk 9.58], except that  lace where, bowing his head, he gave up his spirit [Jn 19.30].'

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His look was as it were hidden. [Is 53.3]

Hidden indeed! The hook of divinity was hidden under the bait of humanity, that he might slay the dragon (the devil) that is in the sea, that is, the salt and bitter world [cf. Is 27.1]. So Job says:

In his eyes as with a hook he shall take Behemoth. [Job 40.19]

The humble one catches the proud; our little child catches the ancient serpent. Whence Isaiah says:

The sucking child shall play on the hole of the asp;
and the weaned child shall thrust his hand into the den of the basilisk. [Is 11.8]

Our Child, wrapped in swaddling clothes and lying in a manger, draws with his powerful hand the asp or basilisk (the devil) from his hole or den (the conscience of sinners).

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Who hath searched out the wisdom of God that goeth before all things?
Wisdom hath been created before all things.

The word of God on high is the fountain of wisdom, [Ecclus 1.3-5]
meaning the Son from whom all wisdom is derived, like water from a fountain.

He, sitting upon the wood of the Cross, treated from the cedar of Libanus (the height of the divinity), to the hyssop (the lowliness of his humanity) which grows out of the wall, the blessed Virgin, of whom Isaiah 38 says:

Ezechias turned his face to the wall, and wept with a great weeping. [Is 38.2-3]

The promise was made to David, that of his seed Christ would be born; but when Ezechias saw that he was going to die without an heir, he believed that the promise regarding Christ was going to fail. So he wept with a great weeping, and turned his face (the gaze of his mind) towards the wall, the blessed Virgin, whom above all he desired to be born of his seed, so that from her Christ might be born. Great was the wisdom of Christ upon the Cross, which caught the devil with the hook of the divinity, when he tried to swallow the bait of his humanity. So Job 26 says:

His wisdom hath struck the proud one. [Job 26.12]

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Who will take and draw out Leviathan with a hook, and will tie his tongue with a cord, and put a ring in his nose, and bore through his jaw with a buckle. [Job 40.19-21]

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Alternatively, Christ is called ‘a rod watching’ because, like a thief who stays awake at night and steals things from the houses of sleepers, using a rod with a hook on it, Christ with the rod of his humanity and the hook of his holy Cross steals souls from the devil. So he says, When I am lifted up from the earth, I shall draw all things to myself [Jn 12.32] with the hook of the holy Cross.

The Day of the Lord cometh like a thief in the night, [1 Thess 5.2]
and,
If thou shalt not watch, I will come to thee as a thief. [Apoc 3.3]

Again, Christ is called a ‘rod of almond’. The centre of an almond is sweet, the shell is hard and the skin is bitter. "The sweet centre is Christ’s divinity, the hard shell is his soul, and the bitter skin his flesh which bore the bitterness of the Passion." (3)

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There's more along these lines. I hope this helps! The above is all from St. Anthony of Padua's sermons.

Deo gratias et Mariae semper Virgini.

You're welcome, it's a great gift you've given in return.